There's some aspects of the old cRPG that's good and all, no doubt about it, for example I would prefer the old XP/GOLD (or even the area one) over multiplier, because multiplier makes people quit as soon as they drop down to x1, or they due to having it for ages no matter how good they do due to auto team (im)balance - absolute banner balance would no doubt fix that though.
BUT, in essence the old cRPG is nothing else than a chance to truly have an overpowered character, either on levels, gear or what not. 100% that most people who prefer it do it for the sole reason of being able to stomp a lot of people with worse gear, specs or level, once you've retired a bunch of times, got the WPF far up, got a bunch of levels etc, the game becomes incredibly unbalanced, yes you can still beat a high level overpowered guy, but that is not due to a level playing field IN ANY WAY, it is due to those people sucking, so obviously they suck even more in new cRPG with a level playing field.
IMO the only reason to play the old cRPG for real is because you do not like an equal playing field.
Not that the current cRPG is flawless, hey what game is though, but so far I haven't seen a single good suggestion anywhere - ever - that could solve the XP/Gold system properly. Pioneer work gentlemen.