Imo craglorn is useless, the whole idea of adventure zones isn't great and the execution is even worse.
Dungeons throughout the game work as they're fun and a little rewarding - as for the craglorn delves, there's no reason to do them and nobody wants to do them.
The trials have a lack of accessibility since the only way to get into one is to have already completed it.

I'd have liked to have seen a few more dungeons, and I don't really care about trials, but craglorn just doesn't work.

I hope that the champion points will fix the whole boring veteran ranks problem, but honestly there is no reason to enter craglorn other than to grind for levels.

I'd personally like to see some more interesting solo zones mixed with group content which are properly incentivised, and replayable.