Those are only .md files, I guess any text editor will open them.
Yeah, no reminders and tasks, but notes should be accessible from anything and git can sync it. Never tried it, but text files were the reason I choose zim in the first place. I want it simple.
It is very hard, time consuming and boring to iron out those finishing issues in any software product. You need team of people being paid for that.
When doing it for fun, I just go until it works and until it is fun. As soon as I come to those last 20% I never touch it anymore.
So ai doubt it will happen until more companies start paying decelopera to do it. But I don’t see the business model in that, so I doubt it will get better fast.