First of all, I recognize themes for years can be stretched awfully thin without popular characters from different sources being a major presence in the line. I also recognize the need to continue advancing vintage remakes from the original toyline and don't think you can pause that for a year. However, with a theme like New Adventures, outer space is on the table and a number of MOTU characters are from outer space. Therefore, I'd draw that connection.
Wave 1
New Adventures He-Man (Toy version)
Hydron
Flogg
Dragstor
Wave 2
NA Sorceress (Sorceress redeco)
NA Skeletor
Slush Head
Horde Prime Clone (B&W Hordak redeco based on Princesses of Power's Horde Prime clone army)
Wave 3
Marshal Bravestarr
NA Teela
Hoove
Wrap Trap
Wave 4
NA Man-at-Arms (MAA redeco)
Deputy Fuzz
Optikk
Karg
Deluxe Wave 1
Rokkon
Flipshot
Deluxe Wave 2
Stonedar
Multibot
Store Exclusives
Tex Hex/Skuzz/Thunderstick 3 Pack
Battle Blade Skeletor/Crita 2 Pack
Fan Channel
Plasmar
Karatti
Mattel Creations
Scrollos
Sultra (Crita partial)
Judge JB
Convention Exclusive
Dingo Dan and Longarm John vs. Scorpia and Octavia "Horde Fugitives Showdown" Pack
Disco Skeletor with Nightstalker
Vehicles
Thirty/Thirty
Blasterhawk with Sy-Klone
Playsets
Talon Fighter with Point Dread