KiNgBrAdLeY7: Red Alert 3. Up to and Command and Conquer 3, it was still alive and good. As long as Westwood had been around, the legend was real and alive. EA took over and shitstorm paints everything in little brown jelly-beans! Anything EA touches, is being transmuted from GOLD, to SHIT!
Even worse, they spend not a single dime or working-hour, in making games compatible with modern systems. The best games in the series, like RA2 and Yuri's, are actually completely unplayable (and don't even mention the fan overhaul with multi support, it is broken because players themselves arbitrarily chop-off game content by self-imposed restrictions and "rules").
Actually, C&C would have been the best thing to ever come at GOG. All it needs is removal of DRM and tweaking to run as it properly should.
I have to agree here, RA3 is where C&C started to go to shit, it would be a couple of years later that we would get the franchise killer C&C 4.
If C&C, TS and RA 1 to 2 and C&C 3 where to come to GOG, I would be quite happy.