laser target painting sounds like an excellent option.
I dont think the artillery guys themselves should see the target area. The spotter just paintes the target ... the artillery guys get to select 'target' from a squad interface drop down.
click fire .... boom.
Artillery should also hit everyone ... friendly fire!!!!
Which leaves huge options for spys to have lots of fun.
The spotter mech should also not be able to be 'cloaked' Not sure what the dev's have in mind for covert ops mechs ... but I'd suggest it is invisible on radar ... always ... and only targetable from a range of like 50m. you can still SEE the mech but your targetting computer is useless.
Also would be easy to implement I'd guess. no new graphics ... just prevent locking if the enemy is out side of 50-100m
Firing weapons would release too much energy which would give away your location etc etc
Engine speed reduced to cut down on noise and again energy used in the reactor. blah blah.
Seamus (Rik)