Here's my two cents on this:
1) There are two powers that can get you to bases, but both have freakishly long cooldowns of over 10 minutes, but 20 minutes instead.
2) You can always ouro>talos>SG, but this adds zoning to ouro, and talos, to get to your SG.
3) Ouro is unlockable at level 1 with any SG that can get to echo galaxy city, but you either pay for the power from P2W or get it via dayjob
4) The channel time is loooooong, which is good for preventing pvp abuses....
5) Ouro's cooldown is only 5 minutes
6) It's nice to use the command to go from one SG base to another! 😄
So, if we can't 'fix' the SG command to just not work in pvp, and it's going away regardless...
With all of this in mind, why not have the powers only take five minutes to recharge? The channel time still would suck loads. You can even make it so it doesn't work in pvp. I honestly don't see why it's such a big deal to be able to port to a base if you've outright earned it. Double the cost if you want, make me buy it over again, but as it is, removing it without improving the game feels to me like a bit of a jerk move, even if I agree with removing the PvP exploits.