How does your top 5 not have Romero? The best MW matchups are Luke vs The Chris at UFC 205 and Jacare vs Yoel at UFC 204. The only problem I have with putting these match ups together is it ruins my idea for a MW Grand Prix if Henderson actually wins the MW title and actually vacates it and retires. I would love to see a 16 man MW tourney.
Top 4 get a by to 2nd round Luke, Chris, Jacare & Romero
# 5 thru 12 fight to go to the 2nd round & 13-16 fight as alternates.
Anderson, Lyoto, Derek Brunson, Vitor Belfort, Robert Whittaker, Gegard Mousasi, Uriah Hall, Thales Leites, Tim Kennedy, Rafael Natal, Mamed Khalidov, Johnny Hendricks or Nick Diaz
Can't put the division on hold for a what if but it would be Epic if actually happened. First and second round fights on night 1. Round 1 fights are 2 5 minute rounds with a 3rd round if a draw. Round 2 fights are 3 five minute rounds with sudden death round if a draw.
Round 3 fights are 3 months later. Fights are 3 five min rounds at the beginning of the night and the final title fight is 5 Five min rounds as the main event.