No your suggesting you know more than you do... go buy a book or two before opening your mouth.
Lol with 300<j2m3> copies 4 cannons late war and you don't want the P-51 early war version..
As far as the J2M5 46 copies about the same as the 152 ...Hark it will be accepted!
Your a Joke,
Edit: the 51 would go over way better with the AH crowd then the J2m3
Disengage your emotions for cripes sake. You seem really ego driven and anger driven.
1) I can name many things that would go over better with the AH crowd that are a bad idea. The quad cannon P-51A was not as significant as the machine gun armed variants. Introduce both into AH and 95+% of the P-51A sorties will have the 20mm cannons. A perk ordnance system would allow the 20mm to be added as an option with a slight perk cost to it, same goes for the A-20G, but without that the historically significant versions would be rare as hens teeth in AH, something I don't think is a good thing.
2) Why do you dislike having more options? What skin is it off of your back if the J2M3 and J2M5 is added rather than just the J2M3? For what it is worth, when/if the J2M is added I would be very surprised if it is anything other than just the J2M3 with maybe an option for the J2M3a's guns in the hangar.
3) Books on the J2M are not exactly common, but I'll tell my books they don't exist for you.