I have kind of been imagining how would TRIGGER continue Little Witch Academia, I think they could just set it into far future (10 years later I guess) where we have a new main character entering Luna Nova because got inspired by Akko's magic back in episode 25. It maybe a bit of a dull plot at first, what can still make the series shine is making a better objective for the new main character, also better rival and antagonist(s), it's up to TRIGGER to make it good...if they do make a new story for the series...
I still think this time skip art is still worth imagining, I think Akko, Constanze and Sucy needs a redesign since they still look too similar to their student look.
Second possibility is make a movie, pretty much how most anime went when it gets very popular. I'm not saying a movie like Enchanting Parade I'm saying a real in theater movie. Story wise they could go put the entire story of LWA TV series into it or make a totally new awesome plot.
Third may sound similar to the first, but instead of a sequel/second season, start another entirely new story that has not direct connection with the original LWA maybe good too.
(My idea is where we see dude can also use magic/be a wizard back in episode 25 right ? Also in the creator's Q&A too, so they could continue in the same world/universe but instead of having a school called Luna Nova they can have a school where there's male female students learning magic, the new anime title can be My Magic Academia... yeah... it may be a My Hero Academia rip off but with TRIGGER style humor, I won't be mad by that. It can go as a far off sequel like my first idea or just another AU)
, but I definitely don't see it happening