I found that in 7th Warp Spiders can do wonders. It's a metric ton of S6 shots with those nice extras like getting out of line of sight in the assault phase. It's not trivial to pull this off - you have to put terrain in the proper places in the set up phase and deploy properly - but for me this is exactly the way to play Eldar: do it right and be extremely effective, fail to have a good plan and get wiped from the table.
Also nice: use Eldrad Ulthran, that's a good addition to your "pychic dominance" wish and he also allows to re-deploy units after both sides have deployed. Other specialist units worth to consider are Dark Reapers (with the upgrade for buildings in 7th edition they work really really nice with a Bastion) to support all your fast units which might lack a bit of punch.