I would rather see a T3 than a T4. The B&O had many more T-3s, and they are more unique looking. That said, from a manufacturer's viewpoint, the T4 can also serve as a B&M model, and maybe some others, too. I don't know of any other 4-8-2s that were made by adding boiler sections to 4-6-2s and 2-8-2s, like the B&O did to create the T-3s.
I do not disagree on the T-3, but the T-4 would be more attractive because it could serve for two roads. Some other posters have mentioned the C&O/Penn 2-10-4s, SP/B&M 2-8-4s. There are also SL-SF/CRI&P 2-8-0s. B&O/Penn 4-4-2s and 2-8-0s and all sorts of NP/GN/SP&S power.
Even though Mr. Bach-Man replied on another topic that there were "no plans" currently to do the USRA lights in N that Bachpersonn is doing in HO, I would not be surprised to see them, as what appears in HO usually appears in N at some point. I did note that the HOs had high mounted lights if the road had that. I would hope that if they appear in N, the same variance would be available. MP's re-issuing these should not hinder B-mann, as B-mann did do a GG-1, which both Kato and Arnold have done. B-mann also did a Van Sweringen Berkshire, which RR and LL/WKW have done. I am convinced that B-mann would do a better job of these than would MP. Aside from the cast-on details, B-mann would not issue these with half wheels live tenders, as has MRC.
I am surprised that MRC is issuing these with sound, a decoder and a half wheels live tender. MR did attempt to compensate by making some of the idler trucks live, but that falls short of what is necessary. Funny, though when you take out the stock tender from any of the MPs (USRA lights, eight wheeler or mogul) and swap in a B-mann
SPECTRUM tender, you get a real winner.
Uncle Pete had about fifteen USRA 0-6-0s (five on OSL), but I do not know if they worked in Ogden, or not.