Hi guys,
I was just thinking of an idea which could increase the difficulty of the game and avoiding some abuse from certain strong players.
According to my experience, i have seen some players using overpowered techniques to handle easy fortress survival game, even in the hardest difficulties. Maybe this game is a little unbalanced for these kind of pro players. That's why, i was thinking of new boss abilities which can totally piss off players who abuse.
For example, some players just don't need to build towers or great defenses. People like jopi29 (from shs clan) can play solo easily on nm/air/invis and do everything like lumbering, pick an offensive hero and defending efficiently without any towers and repairs units for more than 30 minutes ....
Other players don't need to kill units and are just defending their base with walls and repair units most of the time during the game.
To solve this problem and to assure more challenge during fs games, i think it could be funny to put new boss abilities like :
- decay aura or rust aura (check heartstopper aura from necrolyte in dota) : all buildings or/and units lose a percentage of their max health over time. Or maybe an aura which doesn't allow ur repair units to work on walls (why not), or both auras at the same time.
To solve troubles from this aura, players have to kill this boss fast or their base will be simply destroyed.
- Global silence (check silencer ultimate in dota) : Stops all enemies on the map (or in an area) from casting spells (and destroy all summoning units when boss appears on the map ...).
The meaning of this aura is to stop all heros and support units to cast spells which can be enough to beat the map alone (whitout towers). Thus, commander heros and snipers will be totally fucked up with this boss inside the map and no more marines spamming . Moreover, all players on the map must cooperate to kill the boss who have this abilty very fast as alchemists too will be fucked (no more lumber ^^). Finally, the meaning of destroying all summoning units when boss appears on the map is to avoid all marines summons just before the global silence effect...
- Summoning spell (check icewind dale dragon's eye level 4 lol...) : Put an unmoving boss at a random defined place inside the map who is summoning extra creeps. This boss can be defended by his own minions and he summons stronger creeps over time (like endless waves).
The meaning of this ability is to force players heros to go fast outside their base to kill this boss as summoned creeps becoming stronger over time. Thus, players have to cooperate between themselves and must defend their base without heros for some times.
- Time lapse (check nerubian weaver ultimate in dota) or reincarnation (tauren chieftain ultimate) : Warps the boss back in time when he had full hp, resetting the HP and mana.
A really "pain in the ass" ability as players must have enough dps (damage per second) or some nukes to put this boss down. If not, this boss just regain his full hp depending of the ability cooldown u guys will chose (30 sec? 1 minutes? more?). I think this abilty can works nice with another "pain in the ass" ability (create a boss with 2 annoying abilities which works nice together).
For this abililty, it could be maybe useful to put the cooldown indicator above this boss to inform players about how many times they have to beat him.
- Other aura abilities : Why not put some other auras on boss like attack speed, armor redution, damage aura, etc...
These auras could be attached on defined boss or on random boss, or maybe can stack on boss after a certain duration of life (see extrem mode below).
Of course, the difficulty must be reflective because no meaning if too easy or lame if too hard lol ... But i think it could be rly a great idea to make this game more exciting.
Another idea : The extreme mode (idea based on differents games from warcraft 3 like element td and others).
The meaning of this mode (which could be added to the player choice at the begining of this game : normal mode or extreme mode) is to make this game more exciting, particularly for pro players. Maybe new annoying abilities should be in game only in this extreme mod because players will need skills and cooperation to handle these new boss.
Futhermore, abilities can be added to defined boss or on random boss and can be stacked on them if they stay alive enough time like an evolution (every alive boss gain 1 other ability every 2 minutes for example).
Thus all games should be different like this and players have to adapt themself to beat the game. It means more challenge and more exciting games. Thus, players will need equilibrated way of playing to beat the game as if they put all their eggs in one single basket, they will simply fail.
I think this concept is very important and i have noticed that other warcraft games which used this concept were successful (like legion td, element td, heros teamgames like dota).
I've got other ideas but i need more reflexion before publishing them ^^.
Conclusion : These above ideas are just propositions and they certainly need to be reflective a lot. They are based on my personnal reflexion of this game. The real meaning is to reach a game when perma reflexion and brain is needed to win. I have noticed that many good players find now fs quite boring because it's always the same and when you find a good technique and a good base, you have to do always the same and it's always fine and it's becomes too easy (so boring). Thus, create random things in this game, a higher difficulty level and everybody will be happy 
and will keep playing fortress survival.
Thanks for your attention guys, if u read this last answer you're a champion because i posted a complete novel .
