I recently played dust2_csgo on another server and personally I liked it, I thought it looked nice, and made a refeshing differenece to alot of source maps. I bought a new PC a few months ago so framerate isnt really an issue for me anymore, however I'm sure that on my old computer (8800GT 3or4GB ram and AMD3800+) playing it would have been a problem, especially on servers. To be fair to Valve they have always been fairly good about releasing games with good fallback support, and Im sure if you look back to when source was first released the same would have been true, people playing on machines 4-5 years old would have had framerate issues too. Also remember for the moment we're running the map on the current source engine, maybe the map will run better on older PCs once the engine updates have been implemented.
Tbh, it seems to me that CSGO has very little to do with the PC community really, in its design and intention CSGO seems to be all about bringing CS:S to the console market... rather than providing us with a new Counter-Strike game. After 7 years they have only managed to update 2 maps in any significant way (dust2 and aztec)... from what I have seen, nuke, inferno, train are almost identical to the source maps except that the layouts have been "dumbed" down and made simpiler.
My biggest concern i think is that CSGO is simply going to serve to split the CS:S community in half... with some people upgrading to the new version and others sticking to source.
Whilst I love source and valve I have been becoming dis-illusioned over recent years. CS:S is now 7 years old, and the new version seems little more than a large update (that we have to pay for). They completely screwed over all the people who bought L4D by releaseing L4D2 exactly one year later, destroying their community and forcing many to buy a second full-price title. And dont forget, the orange box was released 4 and a half years ago
and there is still no sign of HL2-EP3. So all they've managed to do recently is release POrtal2, which I certainally enjoyed, but doesnt come anywhere close to making up for everything else.
I really wish that the community would start to lobby valve and ask them what the hell they think they are doing.
Anyway... I'll end this rant now... sry 'bout that.
(P.S. Thanks for posting the map downloads Mots, ive been wanted to chek out these maps personally)