Remove sports that are dominated by one country, namely Diving and Table Tennis, if China wins all the medals then what is the point of competition (Badminton used to be part of it, but looks much more equal now in the past 3 cycles), Also remove Boxing which they are doing anyway, and Weightlifting, it's not really a competition, at this point it's who dopes the most, and we know China wins the doping contest hands down since Russia is banned.
I would add a team golf competition, something like the ryder cup