Wished for this a couple of months ago, it was pretty much rejected as too 'easy mode'
If players want this effect, then perhaps try these out for size first:
B17 carries 24/100 lb bombs
Ju88 carries 20/50 kg (110 lb) bombs
B26 carries 20/100 lb bombs
G4M carries 12/60 kg (132 lb) bombs
Ki67 carries 15/50 kg (110 lb) bombs
TBM carries 12/100lb bombs
B25 carries 12/100lb bomb
hmmm, anything else worth mentioning???
Oh yeah, the B29 carries 80/100 lb bombs.
Also, this is a great place to again wish for the 8/50kg equipped 190F-8.
This would be unique (single engine fighter w/ 8 small bombs), it would be useful against gv's, and it would be historically accurate "from the factory" verison.