Well my big problem with the Guerrilla Talent is that it seems meant to only combo with 1-2 skills, and that just seems like too narrow an application. So a Talent aimed specifically at that one build also seems far too narrow.
Well another big thing I see with Famous Thief is that even ignoring the downsides, the upside is hella weak. As in you can replace your initial version with All Skilled Up plus one +Thievery item you can buy at a store (or even two +Thievery items and save the Talent point).
The reworked versions still blow chunks.
No one has any reason to pick a Talent which can instantly kill their character on the third turn, forcing one or two other people to waste their turns reviving the worthless corpse and then blowing their precious, cooldown-limited healing (or limited potion supply) on the "bad life choice" guy. That's just a waste of time and energy.
Famous Thief can still be replicated with +Thievery items (possibly in combination with All Skilled Up), or patience.
Thievery level 1 allows you to steal things up to a total value of 120 gold or 0.5 kg in weight. Thievery level 2 allows you to steal things up to a total value of 140 gold or 1.0 kg in weight.
If the progression is linear, that means...
Thievery level 3 allows you to steal things up to a total value of 160 gold or 1.5 kg in weight. Thievery level 4 allows you to steal things up to a total value of 180 gold or 2.0 kg in weight. Thievery level 5 allows you to steal things up to a total value of 200 gold or 2.5 kg in weight.
Is the progression linear? I don't know. But if it is, that's an extra 60 gold and an extra 1.5 kg.
