One of the things I have always liked about Doc's accounts of his machine refit/repair fits, is that he has never objected to upgrading something well beyond what the manufacturer considered worthwhile. I find that admirable.
If the Tormach mill perhaps isn't as good as you consider worthwhile, wait. You haven't seen yet what Doc's probably going to do to it.
I mean, its speed etc will probably never be up to the Haas, but a lot of those flaws you mentioned are fixable.
My relatively pathetic mini-mill came with a LOT of flaws, and I found ways to fix many of them. Like, a real spindle motor instead of a router, and feedback channels from encoders on the ends of the screws, and filling the broad fiberglass tubes of the frame with epoxy putty, and reinforcing the gantry, and adding a tooltip sensor for setting the z-axis, etc. I turned it into a much better machine than it was, although I know it'll never be in the same class as real machine tools. But anyway, the point is that now the results of running it make me happy, and they didn't really when the mini-mill was new.
Doc is starting with something a lot more awesome than I did, and he's got the chops and the machinery already that he doesn't need to limit himself to the relatively minor kind of mods I made. So don't assume that it's going to remain inadequate, in his hands. At least, not inadequate to his needs.