Ghost is a legitimate counter to killstreaks, and while it was too poweful in Black Ops, now that it has been split up, I am happy with it, and you guys should be as well. Negatives to bringing back stopping power:
1) It does not counter anything
2) Even if it does solve the issue of ghost(Which isn't really an issue), it brings back the problem of stopping power.
3) It essentially removes all variety of perks-it would be the only one people would use. If everyone uses something, its just taking away from the variety.
4) It has no counter, except for Juggernaut, which screws over people who dont use either even more, since most people they end up against will have more health or stronger guns.
5) Even if it would have helped in Black Ops(Which it wouldn't have done), it does not help in Black Ops 2 with the Pick 10 system, which means that people can pick more than one perk in each category, so they could run both now.
6) Ghost gives players an element of surprise they might enjoy, want, or need. Stopping power means that all fire fights are over in less than 5 shots-boring and requires no skill.
Using Black Ops as an example, since this is the most recent Treyarch game, people complained about the Famas/Ghost class setup. Are you honestly saying that you would rather people have a Famas/Stopping Power setup than a Famas/Ghost setup? Really guys? REALLY?