I think there's something wrong about that room. When you claim it, you get a bunch of very useful units including an alchemist.. for free. You can then unclaim the base and claim another.
That gives an unfair advantage to whoever claims it first.
I think boberto, shinkel and the alchi should be a reward for protecting the room for a while.
Ok I just noticed there are more room with alchemist in it. Don't really like it but I guess it's intended.