After utterly destroying an enemy ship stack, taking the last planet on that side of the galaxy and sweeping through the star system with numerous fleets (even over the spot where the stack was), then moving to other side of said galaxy, what should happen after several turns? The whole stack reappeared right next to MY planet. A possible pocket universe? Phased into subspace? Most likely in inter-dimensional bug! Unfortunately I was close to the end of a marathon 24 hr game and didn't think to save at that point so no data. I do have a save that is MANY turns before the occurrence, I'll send it on of you think it to be useful.
I did have a couple of ideas that I thought would be nice to have. Since we will have carrier ship for fighters, a new type of ship that would carry probes that could be dropped (and picked up to be moved) along your border creating a "sensor net" alerting you if someone crossed your border. Also dropping a sensor array (not a ship per se) with long range sensor view. Since we'll have all this other cool tech, only seemed logical.