Just spitballing but would probably go with a card like this,yes it has a ton of NXT talents on it but most of these talents have been down in NXT for years and are long over due to be put on the main roster which in turns opens up spots in NXT for new talent and some lesser used main roster talent to move down.
"Double Retirement"
Triple H Vs. The Rock
"TLC II 20th Anniversary" TLC Match:
Edge Vs. Jeff Hardy
Universal Title:
Roman Reigns(C) Vs. Keith Lee
"The Chosen One Vs. The Phenomenal One"
WWE Title:
Drew McIntrye(C) Vs. AJ Styles
Brock Lesnar Vs. WALTER
RAW Women's Title:
Becky Lynch(C) Vs. Rhea Ripley
Smackdown Women's Title:
Charlotte Flair(C) Vs. Ronda Rousey
The Undertaker Vs. Aleister Black
John Cena Vs. Velveteen Dream
Randy Orton Vs. Tommaso Ciampa
Seth Rollins Vs. Buddy Murphy
IC Title:
Daniel Bryan(C) Vs. Johnny Gargano
The New Day Vs. The Undisputed Era
Something along those lines,if Jeff is gone by the time Mania roles around next year I would go with Edge/Ciampa or Edge/Cena again and if Cena isn't around go Orton/Dream.