After playing with it a bit, I'll say what interests me most is simply the science pack rework. If this turns into an effort to get the devs (is there currently one underway?) to make changes, then there's two separate issues:
1) the "meh" science packs; and
2) other balancing of the tech tree.
I do not have enough play time to be able to evaluate #2, even in vanilla; it's more tricky. The "meh" factor of #1 was easy to evaluate.
Combining both of these into one mod clouds the issue. Is the concern about general balance or about the uninteresting science packs? The rebalancing/prereq changes don't make it "more diverse and interesting" to use the mod's tagline, IMO; it's the science pack rework that does that.