After the wipe, I decided to play as a thief, finding it an entirely nonsense after a while....
First of all, you don't get xp from stealing, which doesn't make much sense, since you got them in FO2 and mostly impairs the non-violent rogue experience.
They are almost no NPC characters to steal from.
You cannot use the Sneak skill to silently approach other players, since it doesn't have any effect on them. This together with the previous point, makes the skill almost useless.
The new reputation systems allows to build up reputation just by buying and the selling the same good over and over again to the shoppers; at some point I was bartering 100 ammo against 100 of the same ammo at the gun shop. Nonsense. Or bug. Or exploit.
In the end I gathered tons of money but then I had to go kill radscorpions or alike to get xp.
So I would suggest to the devs that they should either make it possible to properly play as a rogue or to ban it entirely.
It is almost as boring and pointless as crafting, so I think it should be possible to build a career as a thief/rogue/whatever