Never saw anyone stealing from the rogue chests and wanted to try them out. With gold member & wishing well boosts I got 2.5k xp per chest, which is ridiculously low. Even if the xp per chest was doubled, it still would be slower xp than thieving from scimitar stall (3.8k xp per thieve) as you need to wait around 15 seconds after running through all the chests to start again. Make them atleast 6k xp per chest with boosts activated.
The loot from those chests are not so rewarding either, let's remember that the stop is in multi, level 50 multi. Grinding those chests should be rewarding. Could replace the rune scimitars with dragon scimitars or so.