First of all a warm welcome back!!
Then for the features (I've never used your addon, but I'd love to):
- As Seerah suggested, a way to look through bars for spells you haven't yet placed there would be cool.
- Don't you ever place something on my bars automatically! (or make it optional
)
- Handle symbiosis somehow (currently you either have to get and use [Overgrown Lilypad] or find a druid to cast it on you, so that the spell, which is based on your spec, get's in your spell book, so that you could drag it onto an action button. You don't get a notification for this apart from 60 min. buff applied to you which is easy to oversee in raids)
- Spellbook search would be great
- LDB would be cool too
- About integration with the LevelUpDisplay - spell tooltip on mouseover, abitilty to drag the spell from there to the action bar and toggleble display of features like dungeons and battlegrounds would be nice.