A's at least has an arc throughout the whole thing, whereas the original starts generic and then starts getting a bit unusual. So A's would qualify.
From what I've seen, Strikers is dreadful. I can tolerate a magical girl show. Sometimes, I can like one. I can't tolerate a show that is badly animated, introduces more characters than it knows what to do with, and goes from a faux magical girl series to a faux action series with less interesting action, characters and powers. A's at least had a few duels that were better than the original Nanoha/Fate showdown. Strikers had characters showing off special moves but not much actual...well, action.
They made stuff up and thought otaku would keep watching. Hey fans, look, your moe characters are all grown up now! Now we can get away with fanservice, so watch this! Like I said, dreadful. If they were going to make more, they should have done it with the REAL main characters in middle school like they were at the end of A's. But if you stop with A's, you have something acceptable. So if that's as far as you've been, do yourself a favor and stop.
Not that I mean to extol Nanoha as something super amazing that was defiled, but...yeah. I get annoyed when something decent gets turned into something truly bad.
