Hmm, so other ships can use the created phase lane to warp away? Maybe they weren't doing that because I had phase jump as a group on, and since the cap ship couldn't do it none of them did it either. The main problem I had was that if I jumped my fleet into the enemies base, and he attacked me, there was no quick way to get back to my base. If my entire fleet except the Marauder itself can make it back, then thats good enough. The only thing I use my marauder for in combat really is to fly it around in circles using the speed buff while the enemy tries to chase me.

Yep, it's a two-way gate! Basically your phase gate on the move You can also bounce fleets between two Marauders this way, but not the Marauders themselves, which is intended

An interesting thing to note is that you don't need to keep channeling the ability until the ships get there, only until they enter phase space, and then you can move the Marauder away and the ships will land properly.

the marauder should simply fast-produce a temporary phase gate
like ... swarm of nanites comes out of it, forms a gate, the gate will be active for 5 minutes and then the nanites run out of energy or something like that
of cause the gate would be destroyable

would make the ability much easier to use and less buggy

I've never had any bugs with it