What u get for rank:
1) Mana regen bonus for hero, very useful..
2) heroes..
3) .. reserved for anything i might have forgotten..
Hope more will come..
Also when you beat the game on a very difficult mode you get a bonus item for next games.(Trojans roar(stun all creeps), Wings of behemot(lets u fly rly fast)).
Shadow sniper is quite OP damage wise. has Metamorphois + adrenaline that can clear the fron of your base very effectively + 20s cooldown nuker ability "Shadow cannon"
Alchemist is of little use in a fight (altho ha can save 1 wall from destruction and root creeps) but the transmute ability means u can do really nice power lumbering (think a circle of factories all speeding up a handfull of mill constructions)
Tinker: can repair walls (quite powerful repair, but drains mana a LOT, may use the tree of vigor to counter this later) ofc can transform to other form.. and can enchant worker so next building is instant(useful but very long cooldown)
EDIT: the more generous donators can also get a custom hero and 1 special ability that all of his heroes get (player name based). Please corect me if im off here..
Edited by Waffle, 12 March 2013 - 08:30 AM.