i am aware that there are some power users out there who need fast chips, but personally, i use my 2010 mbp daily and have nothing to complain about it. it's the 15", so with an i5 processor (better than the core generations), once upgraded to an ssd and 8gb or ram, it holds up quite fine.
gpus have gotten better in the last years much more than cpus. also, lots of efforts were put on reducing power consumption through optimised instructions.
a note for you: skylake still won't have full hardware x265/HEVC acceleration, but it will come only with kaby lake

this, along with native usb 3.1 is reason enough for me to wait some more.
still i'm really curious about the future redesign, bring it on!!