It would be nice to see it added, but I am not sure I agree it would see more use than an updated B-26B. The B-26 is faster and better defended.
But the B25 in AH is a heck of a bullet sponge, way more so then the B26. It in terms of AH is better in terms of defense. Most attacks in the MA come from the rear. The B25 has a twin mount in the tail as opposed to the single in the B26 and owing to the twin tail allows the top turret an excellent field of fire that the B26 lacks. It would (could?) have superior frontal armament compared with the b26.
If we assume similar performance to a B25H it has superior rate of climb and in WEP is marginally faster.
Edit: Here are the charts.
Speed performance B25H Vs B26 in AH:

And Climb:
