The thing i hated the most was seeing my hard work getting overwritten by older crap on the old sync site. That is why i damn near had to rebuild 0.5D.1 from scratch when i added TSOP to it. Too much crap from the older entrenchment versions in it, and stuff being overwritten by old crap by peeps not paying attention, or by peeps not asking if the mod was updated. I am glad we switched to SVN. There was one instance where i accidentally overwrote Psychoaks work (oops!). But there was that handy revert function in SVN that saved our ass's.
My Windows 7 64, i5 3.2 gig, 6 gigs ddr3 ram, rig is now pushing on the "low end" spectrum too. Bought it last year, but the stuff coming out now is damn near unplayable on it (SoTS 2). However, i can play SoA 2 on max settings on my crappy laptop (with an even crappier intel video chip), and i get a very good frame rate. I can run large maps with 5 vicious AI factions damn near all day until the typical late game slow down. Ram usage never goes above 1.6 gigs.