Remember in Skyrim those chests in the TG Cistern that you could use to practice lockpicking? What if we had a furnishing, like the regular treasure chests but ones you could practice lockpicking on? Of course, they'd be decorative and interactive and wouldn't give you Legerdemain xp but it'd be kinda cool, yeah? Maybe have them so they could be timed someway, like have them display the chest opening animation so that other players could see once you successfully picked the lock, and that way they could used for player competition for friends and guilds.
Dunno, just a thought I had while decorating my thief's house today...
PC-NA since 2015. Tired and unimpressed.