Well I don't think Imotek is a big player in 6th, but I'll commend you on not taking a Heldrake, but you do have a very strong list going there.
Personally I still take Imotek a lot and he typically warrants a sort of playstyle and I think you have that mechanic in your list. For instance, knowing that I'm using Imotek, I often don't advance, and the Lightning usually creates a sense of urgency on my opponent's behalf.
Things that benefit from this? Reserves, 24" weapons, and Tomb Spyders creating scarabs. I had games where people didn't figure it out in time but by the time they reached me I had far too many scarabs to deal with.
However there is one thing I always take with Imotek and that's a Chrono-tek. Even with the Chrono I often fail going beyond 3 turns of Night Fight. I can't imagine it without him.
Looks good though, but that's my vote! Good luck