Bringing back the name Evolution would be a backwards step for sure. HHH knows he has to get people taking the steps up towards the main event, and re-hashing a 10- year old idea won't help that to happen.
I'd expect a summer based around Bryan, Orton, Batista to start with, with Lesnar to have a match at a PPV followed by a shot (and win) at SS. Cena will hopefully push Wyatt up and then take a break for a few months, before returning to challenge Lesnar (unsuccessfully).
I'm more interested to see how Cesaro fits in. Heyman has the ability to turn on anyone - even Lesnar - so that could be a good way of freshening things up towards the end of the year.