Maybe. But you can't rely on everyone having it, especially if they play modded. And even that patch only gets the game up to the maximum of 4GB. And that has to fit all the units, textures and music. And that fills up quickly. Plus you have to consider loading times as well.
Well that's true, I read up on the 32-bit RAM-issue, some real knowledgable people on this forum I have to say, which is great! Regarding my mod it will be huge with thousands of unit models and stuff but it is supposed to be a scenario platform rather than to be played from 4000 bc to 2100 AD, even though that will be a possibility. Since I hardly ever play the game because I have to mod it, when RAM is maxed from all the stuff put into it, will the game CTD? Would a solution then be to restart (given that you constantly save)? I have seen reports from large mods of CTDs from the memory being maxed, at least that was my impression.