I fly the 17s 24s and lancs... I could absolutely go for minor perking on them.
Actually I think it would be better to just perk the 17s and 24s at about 3-5 a piece (9-15 a formation) and lancs at 1-3 a piece (3-9 a formation).
With those numbers, you could pretty much make back any perks you spent just by being successful and returning to base 50% of the time.
I also agree, the tactical bombers would get used more. And essentially if you bomb with any regularity, your Bomber Perks will more than support a 17s or 24s fetish.