There were some really fun stages back in the 2014 Team cup like the %OC records which were really fun.
On a constructive note I do agree with keeping the restricions on 2D stages to socket type only, with Ram OC then clearly ram type etc.. It's all very well and good wanting to compete in a socket 462 stage with your Athlon XP, but 90% of the people who bench that kind of hardware would have an NF2 board ready to go, not a single channel VIA chipset.
I think for the platform to continue and succeed you need to make stages that will be highly competitive and that means having as many people involved as possible. That kinda goes with my point earlier about making the competition accesable to all.