Going .2c you deem near impossible, but a warp drive is A-okay? What about the exotic matter?

If exotic matter is okay, than perhaps one could send a craft capable of making a wormhole across the interstellar medium that links up to the one at home if it reaches its destination. Than you can hop in and go bask under a alien sun. Ergo, interstellar travel just became a lot more practical since you only need to reach destination once. Losing connection with a worm hole would suck hard though.

And I think from here on out i'm going to think about interplanetary scale space battle since there's too many unknowns with interstellar stuff to be all realistic.