Nearly my last choice. The B-25 was a fine bomber and widely seen during WWII, and very important, but the American plane set already large, the B-25 is pretty much between the B-26 and B-24 in speed and ord capabilities now, and U.S. plane set getting the Firefly added already. With two exceptions, below, I'd rather see additions to the other countries from WWII.
If getting yet another American made plane, then a perk-worthy A-26 Invader, or a P-39 Airacobra in Russian Skin and placed in the Russian plane set, makes more sense to me. Buff drivers need another perk economy sink than Arado. 2nd highest scoring Allied Ace was a Russian flying P-39's, and a big nod to the Lend-Lease part of the war (as well as being a great plane at low level similar to a Pony or Jug up high). Otherwise, look to other countries plane sets to even things out more.
If just getting another bomber, look to the Russian, German, or even Italian plane sets, as they are pretty thin in planes overall, and bombers especially.
If looking for Early War bomber, go He-111 for Battle of Britain.
Only thing on that list that I rated lower than the B-25 was the He410 night fighter/bomber and bomber destroyer and Brewster Buffalo. No night in arenas, so don't see the need for it. Outclassed as a fighter by most planes in arenas. And if arguing for a bomber interceptor, I'll take the G.55 over the He-410 any day. Buffalo would be a hangar queen and occasional SEA ride.
And a vague entry of "another Japanese fighter" won't stand a chance in voting (and I'd go Judy before another Japanese fighter addition anyways, for Japanese and carrier plane-sets). Don't stand a chance, and figure dropped in first round.
He-177 would have been on my list, but certainly HTC wants to avoid the whole issue about guided munition options. Then, I'd have gone 88mm FlaK36 before Firefly.
