The risk reward for Raiden 50/50 (b2/b33) in the corner is in Raiden's favor I think, generally... So in the future, I'll try to play safer midscreen and go ham in the corner...
Thanks to TONY-T, I use those combos in the corner (when I feel I won't drop):
b2, b2, b14, EX df2, NJP, b14, df2 (or no df2 for standing reset)
b33, EX df2, b2, 213, b14, df2 (or not).
If I feel the 4 of the b14 won't connect because the opponent is too low, I end the combo with b111+3... (It's reactable)
I dont't know about Thunder God or MoS, but I feel with Displacer, you better go crazy in the corner...
Too bad he does not seem to have a great low poke...