problem with the new steal (at 44) is all though it owns, you can only use it for about 3-4 levles worth of killing, by 49-50, you should be normally xping on mobs too high for you, by 52, unless you do quick fast kill groups at phants and the sort, you wont be stealing. And the problem with stealing off another group is, besides being tedius, takes money from another rogue from stealing. I don't remember where but some one posted steal wars with rogues, when one rogue steals, the other rogue gets a little less then normal, then when the first rogue steals again, its a little less the rouge #2's steal. Not to attack your post or anything lol those are just problems. Also, I don't like it when rogues steal off of my groups, they should F off and get their own group.
If you were to steal from a group though, find a group of freinds/guildies, and if not, ask first. Something you might be able to do is shout (in a populated town dur) a level range, and say you'll add for that group, the only pay you want is what you pick poket, like "53 rogue willing to add to a group of 40-46's, just as long as I can pickpoket" or something, I say or something cause I think thats too long. Not a bad idea though, eh? Go CKY for inspiring me to take your idea and Spifeatize it