I'd do a DLC with the first UFC fighters, such as the Sumo Teila Tuli or Gerard Gordeau, 1 hand gloved Art Jimmerson.
the DLC with the UFC 1 arena and commentary, the old days
I was kinda thinking the same thing but not just UFC 1 but that whole era kinda. With Ken Shamrock and Frank if possible, Kimo, Tank Abbott, and Marcus Smith. It'll let you remake some of the classics like Ken vs Royce 1, Frank vs Tito at UFC 22, Smith vs Coleman UFC 14, Frye vs Abbott at Ultimate Ultimate 1996 oand Tito vs Ken.