I'm sure the Beau will be along in the future, after a Soviet level bomber, the Wellington, the D520, and maybe even after the Ki-100. Hard telling for sure.
I know it would be nice to have for PTO scenarios, no doubt. Seeing these buzzin' around in the MA with Aussie markings would be nice too.
In terms of comparing it to the Mossi, it is slower, carries less ammo (but does have a variant with quad 20mm and quad .50's???), and can carry a torpedo, it really isn't all that different as an attack platform. The main issue seems to be the extreme need to have an escort fighter while the Mossi can on occasion out run many of the fighters to safety if the conditions are right (sun, moon, and stars all align).