New gameplay features and fixes for GPs refresh:

Yes! I need swimmable lakes in Granite Falls!

I would also like to add hiking some trails like in snowy escape for granite falls. What's camping without hiking a trail.
Also the restaurant have high chairs for toddlers to eat. Have the hotplate working in a restaurant, have entertainment at the restaurant.
Get to work be able to take our sick Sims to the doctors.
Planet Sixam needs an upgrade badly.
Add more strange stories in Strangerville.

Realm of Magic
Making the realm itself a location with meaning and adding in more role-playing/story elements for people who go there would be nice, right now it's really just a lifeless hub.

I know Strangerville got alot of (really confusing) complaints but I loved the storyline there even though it was too short.

RoM needs it's lore fleshed out, and honestly I wish that having a mini-story in each world was standard because it makes the towns seem more "alive" and gives them personality beyond "build stuff here then ignore everything else going on around town."