I'm using the DW20 pack with mods from MindCrack added in to fill gaps. It's not particularly difficult to combine the two, just make sure to copy the configs for the mods you're borrowing as well.
I think the situation is starting to extend beyond reason. I don't care about MystCraft mechanics. It was good enough to include in the MindCrack pack, just get it in the Ultimate pack and release already. I think we've all done our bit as beta testers while we wait for everything to be "just right". It's time, I think, to stop playing buddy-buddy with the ForgeCraft crew and start making decisions that take into account the hard learned lessons elsewhere in the industry. Namely that people start to get justifiably frustrated when releases get pushed back and then back some more and then back again over stuff that the end user doesn't really care about.