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When I'm not bringing everyone down being depressed about our Codex I'm working on different lists to keep things interesting.
Here's something I came up with, espousing ==My== love for cheap tanks with DA uniqueness.
Sammael on jetbike
3x Venerable Dreads w/ multi-meltas and heavy flamers
2x Tactical Squads w/ missile launcher, flamer, powerfist, Rhino
3-man Ravenwing Attack Squadron, 2 meltas, Apothecary, melta bombs, Attack Bike w/ multi-melta
2x Land Speeder w/ multi-melta, heavy flamer (2 squadrons of 1)
Predator w/ autocannon, heavy bolters, storm bolter
A bit light on bodies, but that's the idea. Tacticals split and cap objectives, staying hidden and safe, with an Apothecary handy to keep them going. Other than that, I have 3 Venerable Dreads, 3 AV13 tanks, 2 Rhinos, and 2 Speeders to make up the armor contingent, with plenty of melty and burny goodness to go after mech or hordes. Plus, Sammael is too cool not to use.
Check out ==My== blog: www.bnhblog.blogspot.com
Well...I'd say in terms of your theme of as many big nasty tanks as possible with DA I'd say your solid.
Personally I would just go ravenwing with lots of landspeeders and 3 pred destructors for additional support of my bikes. tough to do, but a thought.