Fixing the daemon princes

I was curious on our general communities opinions on our daemon princes.

Honestly I think they are meh, for a person who went through demonic ascension and striking only having ap 2 is just terrible. Unless you make them khorne then they suck into anything above a space marine.

The only time I've seen one used was a winged one in pactbound with the elixir. I think the winged dp ability is actually pretty good, but the foot one is just kind of okay? Like 3 up invulnerable is very nice but I find it rarely matters

Please share your experiences with your daemon princes and thoughts to if they should be improved at all or if they are fine