I think the whole idea of letter suffixes is lame. In real life, when they give a new ship the same name as the old one, they don't give it the same registry number with a letter after it, because that makes no sense. A registry number exists for bookkeeping purposes, a way of uniquely identifying a ship, its series, its characteristics, its place in the sequence, etc. It's silly to break the sequence and obscure that information by using an earlier ship's number in order to "honor" that earlier ship. The reuse of the name already honors it.
So I have no desire to see the "bloody A, B, C or D" perpetuated on other ships. It's bad enough that it gets used on the Enterprises at all. (I wish the new Enterprise introduced in TVH had been, say, NCC-1781 instead of 1701-A. Heck, it would've been an even easier repaint job on the miniature.)