Play with which concept exactly? The guy from the topic you've submitted wants a new expansion, not C1 --> C2 --> etc. I'm against that. I want to play the original game, not modifications. If this will be a custom server I will not play here.
I've spent 4 years restoring original C1 not to add some strange customs, don't worry. Apart from some customs there were talks about ToI, FG, clan privileges, +4 safe, and so on. No custom skills or changes in mechanic.