Posts: 6,809
Threads: 409
Joined: Aug 2007
Staff roles: Story Dev Economy Dev
Except in the scenario you've outlined - caps interfering with 'aces' in an ongoing furball, these changes would make no difference. Their arrival would still force those 'aces' to flee the fight, breaking up the 'matchmaking' you mentioned. It's exactly the same result as before, except with the chance of a blue at the end of it being a minuscule chance smaller.
All you'd be doing is making battleships less fun to use (i.e. more tedious by making them even slower), and massively reducing cruisers' utility as an anti-battleship platform.
Removing thrusters from gunboats also strikes me as a bad decision, given that many of them (gunships in particular) are designed as anti-bomber/snub platforms. Poorly thought out idea that doesn't address the core issue the OP is concerned about.
@Evans - we playing on a different server? Gunboats are pretty amazing against snubs as it is. They definitely don't need more range or power in their turrets.