I don't longer think Obsidian's speed should be changed anymore, however, I think among all the buffs it recieved, changing the Health and Shield HP ratio is not necessary, because the energy upkeep was reduced a lot. Reverting this change would make Obsidians a bit less strong against t1 (less vet + more vulerability if there is an energy stalling due to Obsidian / mobile shield spam).
I still think it's wrong that Cybran has 2 heavy tanks, costing the same price and would prefer a cheaper Wagner (yet as strong).
As for Aeon mobile shield strength and possible abuse for navy, and late t2 / t3, I guess we will have to wait for 1v1 ladder feedback because a lot of replays are required to evaluate them and the handful I watched were not conclusive enough so far (even though snipers + cheap mobile shields spam is already used to great efficiency by some players).