Good idea - it would come out in the wake of the WBB 44T buying spree.
I know - some/many would only have one or the other, but there are many of us
who actually considered both. Now, I may again consider the MTH - because it is die-cast - when and if it indeed does show up. (We seldom mention it, but the WBB unit is actually -mostly- die-cast, itself; the upper body is plastic, but otherwise it's a zinc loco.)
Really, neither of them do it for me completely - I run TMCC. But I'll now re-consider the MTH next year.