I agree with vegie that this format is excellent. SP's original listing, using the grades, was deliberately whimsical, and I think this tier structure is better suited to serious discussion.
I'd like to see the whole 9.5 tier removed, because it follows right on the heels of your presentation about this new way you're going to do things, and I also think (as vegie also suggests) you could safely put those units in Tier 9. As I understand your formula for rating units.
The order looks good to me. At the top, which is the only place I think precise placement is interesting, I'd flip the Hydra and Marcu, and I'd also drop Gilbert down some distance. He's great but I don't see why he should outstrip the Knights by a couple places, and I reject the idea that either belongs ahead of the Krav.
I'm also a fan of Eltahale, who you say you're not comfortable assessing, but I don't think of myself as a great player who should be throwing his weight around in these conversations. So that's my
.
Also, I can't believe you numbered that whole list manually. Heaven help you when you want to change something, or you realize you left out some unit from Tier 8. Or whatever.
Thanks for sharing, this is very interesting.