I'd say Blackmer is the only new and indistinguishable
Deep Space 9 character (he's so bland that I had to look up his name just now), that's more a TNG problem right now. The issue with DS9 is more that the new and interesting characters that were introduced back when aren't really used much anymore either. I want to see more Prynn, Candlewood, and Phillipa in the new DS9 books.
It illustrates that
some of us sometimes want that. Like I said earlier, that honestly has no appeal to me at all, and I'm pretty sure JD said essentially the same thing, for two examples. I'm all about long character development and world building over time, and I'd love to get back to the DS9/SCE relaunch schedule of spending multiple real-life years on a single continuous in-setting year.