I think he means Control Center to be a prerequisite to Launch the Avenger on a mission to mars. On one hand I like how it would introduce a visible "countdown" (construction days) instead of the randomness of "when will my research end". But it's also something that would be useful for a tiny amount of time : From the game's point of view, as soon as you can go to Mars, you should. It's not a facility you're supposed to keep long enough to pay a monthly fee, and it would be unlikely to have to defend it in "base assault".
One thing I like with the hospital idea is that you would use the "transfer" mechanism to send wounded to your only base which has the facility. Not sure how useful it would feel, however, because there are IMO mostly 2 ways to play :
- ironman, where the casualties are so high and random that you keep a large squad anyway - a 30-day wound does not cripple your strike force.
- nitpicker, where you reload when someone is wounded ot killed.
In both cases, quickened healing is not so useful.