Triumph should have just made a 750, period. It's a damn shame the 750 class is practically dead and all praise to Suziki for keeping it alive, sort of. The liter bikes are simply too much for mortals anymore.
500, 750, 1000. So logical. The whole 600 class is a historic oddity and a mistake. 636 was cheating small time, the 675 is in its own neverworld.
I blame Kawi as much as anyone. First because in some weird way the 600 class sprang from their in so many ways trendsetting 550. Then because they let the Z7 go undeveloped and then die.
Bring back the 750's. Not too big, not too small, just right.