I think that selecting single paint scheme for all targets will be OK - it won't overcomplicate the UI this way, and it's wise to take a look on camo in different surrounding on the same map anyway.
Being able to select mech models of all the targets (I believe it's going to be 12 of them when 12 vs 12 will be implemented?) would be fine too, but IMO less important. But being able to test the camo you're going to buy for real money in actual environment when viewing it from outside is just what we need - and it can be done this way, w/o implementing 3rd person. Actually, 3rd person view will be even less convenient for testing the camouflage, as with restricted camera position player can't take a look on his mech from different distances at which combat occurs.
Edited by Morang, 16 April 2013 - 11:22 PM.