I strongly disagree dude the fact that i would if allowed shell out 250 bucks in a single hit is not the end of my spending money on SWTOR, in the last month alone i have purchased 50 bucks of cartel coins in order to customise my experience and that isn't likely to stop, so when you state it would harm the revenue stream i have to say you sir/ma'am are dead wrong. Games like Champions online offer a very successful model that allows for life time membership, sub play and F2p. On the contrary i believe it would increase the revenue stream not decrease it. Not to mention by buying a life sub i am showing my intention to play for the life of the game and while doing so keeping the game well and truly supported, now multiply that factor by a few hundred people that might also take up the offer. For another example of a system that just introduced this model look no further that the Secret World.
Anyway i would dearly love to hear an opinion on this from The game owners themselves.