So this reminded me of the the O=12 Delta a lot! I'm not up on Iron Man at all but I think this is a cool thing.
And here I thought it was from that What If Iron Man Went Public in the 1990s. Would honestly be a pretty good use of Iron Man tech.
About the same size as an Armslave from Full Metal Panic, maybe a little shorter. So 1.5-2x the size of a TAG.
You know, I would actually like it if they redesigned the lizard to be more ladylike. Kinda like the Marut, but maybe make it a bit more bulky due to the pilot inside. Idk, kinda feels like a Bakunin thing to make their TAG a freaky lady, and I'm a bit bothered that the morlocks aren't freaky anymore. Could be cool.
I agree with your ideas stated here. I too think the new Morlocks are not good representations of what is stated of the unit in their lore. I'd expect bio-augment crazy or even body-horror to a certain extent. Bakunin does seem to be where the weird go unless it is somewhere remote like an astroid.
New Morlocks do at least make it easy to note Metachemistry. Croc-Regeneration Katana-Super Jump That kind of thing. As for the Lizard, most TAGs probably get the masculine form because they keep lifting heavy armaments at the shoulder. You could certainly get some interesting designs from messing with weapon location- like putting the flamethrower in the tail, for example.
Thanks to open source sharing, we'll be soon able to make our own animated Gundam at any scale. But a 18m height one is a good start.