I was joking, haha, I doubt anybody was in fact asking for these characters.
However, I think Piranha Plant was a genuinely good addition because of just how many variations of said generic mook she was able to represent being a single fighter. One of the most important things about a generic mook is that they're going to come in a lot of varieties, and Piranha Plant is able to juggle things derived from so many of these, somehow skirting by the Wahoominati in becoming a Putrid Piranha for her side special, among plenty of other details, of course. Piranha Plant is less about representing a generic enemy and more about representing the generic enemy as a concept, and I think she's excellent on that front. She also happens to be fun to play as. Ledge traps ahoy! And seeing as I feel this way, I don't think we need more mooks. But admittedly I'm not against the concept, I just don't think it's necessary.
I consider myself quite open-minded too, for what it's worth. I'm 1/9 in terms of DLC characters I wanted beforehand, and 8/9 in terms of DLC characters I've been happy with, as it currently stands. But of course, there are things I don't like; the abundance of Fire Emblem... bothers me a little bit, but I'll sleep at night just fine.
Make of it what you will, but beyond the pet peeve I just mentioned... I'm somewhat difficult to disappoint.