Random idea: Operational M247 "SGT York" but in Ukrainian scheme.
with slat armour, quad pack of Stingers. Some scope to keep the FCS/Radar and swap the dual bofors with a gatling or twin 35mm...
Keep the stingers and the 40mm. The 40mm would be limited to ground targets but they would mess up anything other than a tank using modernized ammo. The Stingers would probably work as you only need to point them in the general direction. Use an optical sight for the 40mm as the radar couldn't find its own butt.
Slat armor and a new chassis would be cool.