Thanks for the pointers, these problems have been fixed. Yeah might be a disappointment, but I'm on the fence here, I could make the final mission harder/longer, but on the other hand, the player shouldn't be tormented in that last mission, he deserves better (and he can just shut the game off after landing on Mars anyway, if he knows that the final mission is tedious & long). Ideally I'd want the player to have his hardest battle 'bossfight' earlier, possibly required to get the last crucial tech, but not sure yet how one could do it.
Oh yeah and just asking - how did you get so much money? What your bases looked like at the end? How much time it took?