Q1: better to not use dlc
Q2: yes, ask a mod to add it after youve completed a run
Q3: no
Q4: yes, ask a mod to add them

Q1: I think we should create subcategories for "no DLC/DLC". Also, can someone tell me if the current runs on the leaderboard use DLC or not?
Q2: You mean like 100% category?
Q3: It doesn't matter.
Q4: Sure, I'll add them later.

If it means completing everything, it should be called 100%. That's sort of a generic category the speedrunning community use.

Done.