Great feedback, thanks LorenzoGatti and Luckless, this helps a lot!
1. Wave spawns: Dead users will spawn with the next 'wave', time adjusted to the game. This means a player rarely spawns totally alone, hopefully making camping less effective, and counter attacks more deadly (As you are likely to face multiple opponents rushing out of spawn that you have to deal with as a group, rather than single players coming out one at a time over a longer period.)
I like this one in particular for the homeworld. Timing the ships to all spawn at once as part of a wave (perhaps even displaying a countdown # on the planet for all teams to see) gives an interesting tactical scenario. It would give an incentive to the offensive team to attack in a coordinated burst which makes endgame battles more climactic rather than drawn out wars of attrition.