Most people here don't like SupCom 2 because it regressed considerably the game in a few ways. But it also make the game better in several ways. FAF should copy some of SupCom 2's good ideas, such as:
1. T1 mex have longer pay-back time. Maybe a cost of 100 mass for a T1 mex.
2. Shields have really low health health, but recharge quickly. This makes breaking through massed shields less of a big deal. For example, a mobile shield could have 50 hp (enough to block 3 Striker shots) and recharge in 2 seconds. This removes the need for "shield interference" which causes more problems than it solves.
3. Wreckage is worth 20%. Maps with lots of wreckage suck. ASF *AND* naval wreckage has already been super nerfed in faf. Why not just nerf all of it? Make wreckage worth 20% (instead of 81%). Then wreckage will still matter, but not be a huge deal.
TL;DR: T1 mex --> cost more, Shields --> Less hp, faster recharge, Wreckage --> 20% mass value