Shock: yeah, i'll rather have something more simple balance wise, but i think its kinda "kewl" ability which is already in the game. It's easier to pick things which are already implemented. On the other hand it could be given to Assault Guards instead.
Issue with the suppression for Shocks or even Assault Guards would be how to implement it stat-wise without forcing the squad to change weapons. It's difficult to make it effective at range without becoming god-like at short-range/instant-pin. If I remember correctly, the ability in campaign was pretty much instant suppression, even if you did move slower.
For the SU-85, as I said in my own thread awhile back: I still believe its stats should be retuned to have more penetration and accuracy, as stated, but more armour and less ROF to make it different from the SU-76 as both units rely on ROF. Essentially a mini-Jagdpanzer with better pen.
Of they would be good changes, but both of us have our own ideas on things being changed and how so I can't say I agree with them all unless they both match. Hey you stole my minesweeper repair idea and the same numbers!