Been playing the pack for about 12 hours now, mainly mining. I've noticed a couple of little nit picking points that would make the modpack even more suitable for quick progression. Of course, this is all just personal taste, but I think it would help in the ultimate goal of a video-friendly modpack.
1) Lapis is less common than it ought to be. It's obviously a crazy world if I have found more diamonds than I have lapis.
2) Project Red gems are hard to come by I find. If i ever got into micro-blocks, I imagine this would be inhibiting.
3) Ferrous ore could do with a little more spawning, given it's importance towards the end of TE.
4) (Totally unimportant observation warning) Silver seems a fair bit rarer than lead. Whenever I've played TE in the past, they've always been balanced pretty much the same. This might just be my perception, but is it possible that perhaps lead overrides silver blocks at generation? It's not a huge deal, as I use lead more than silver anyway, but just in case it's not on purpose...