The problem I see with the shield/shield battery loss as the cruise engine charges is that... Well... You use cruise a lot normally, any way. Cruise costing money is like warp damaging a ship - it discourages use of it, which means people will eventually have to engine-kill thrust their way to destinations. However, if it is possible to make it so one cannot turn, only strafe, in cruise, it will discourage combat-cruising more efficiently, in my opinion.
