Taking that gate is a one-way-ticket, just as it always was. You don't use it and then suddenly decide to go back. You use it to place your K'haras all over Sirius and log something else in case of nomicron defense. Or you use the gate and just don't dock anywhere, so when you die to hostiles or convenient approach of planets or suns, you move back to Nomicrons. Or you just fly all the way back, as K'hara has the benefit of the infinite cloak. All it takes is a maximum of 30 minutes this way.
Using that gate should be a real decision, not a "Eh, no, I better move back" or "Yay, moving back and forth using insta-teleport!"
Apart from that, don't you think it would look weird if suddenly a new nomad gate pops up in populated space? ;3