Dreamscape Gardens is a map pack that I've been playing since the days of RDX Discovery, back in 2019. It's one of the largest packs out there and features many varied tracks mostly featuring comfy, open spaces, cool features not seen in others tracks, and lots of KIRB.
What I like the most about the pack is that, now that the new update has rolled out, the tracks I considered the weakest have been removed. What's left is a quality compilation of medium-sized tracks in many different settings. Something special about this pack are the remakes, though. RoyKirbs makes a special effort to keep the layout intact, but give it a completely new coat of paint and adapt i to a Sonic-like setting, which makes for a very interesting take on old courses. My favorite track in all the pack is the "port" of MK64's Bowser's Castle.
The only thing missing from this pack is a true crown jewel that binds it all. Tracks like Route Three-One, A Bud Time and City Parkway have come close to being that, but I feel like Roy is hiding their true power and that an incredible new map that far breaks the established vanilla formula could shake the whole vibe of the pack massively.
For the time being, this pack has remained widely played since it's release for a reason, and it's a delight especially if you're new to custom tracks - some of them, like Toffee Tor and Desert Dream, are great for people who want to start diverting from the traditional vanilla netplay experience.