I've just spent the past 3 hours trying to develop what I think is the least exploitable approach to this spot but if I'm being honest I'm still unconvinced with what I've come up with.

The spot seems simple enough - 

Hero raises SB and is flatted by BB. Flop is 942o. How do we proceed? (Approach this from a vacuum/GTO perspective, any player specific or population-tendency based exploitation is not in the spirit of this exercise)

I have my own thoughts to share but I don't want to prematurely steer the discussion one way or another. Hopefully you guys find this worthy of discussion at all and I'm not crazy for finding it interesting :)