Let's see if I can be controversial...
Aquatics
Can't think of a reason to drop or add anything
Archery
Same - although the thought of an indoor compound archery event is intriguing
Athletics
OUT - Women's heptathlon, Mixed 4 x 400, walking mixed relay thing
IN - Women's decathlon, M & F pentathlon, M & F 50k walk
Wild Idea - an Athletics version of cycling's Madison race
(The mixed 4 x 4 has got boring since the teams worked out which order to run the men and women to maximum effect and it affected the quality of the other relays)
Basketball
Not a fan of 3x3 but prepared to give it another chance in Paris
Boxing
Add 1 more weight for men and 2 more for women, or if the IBA are still going to be useless the drop the sport completely
Canoeing
Add M C1 200m , F C1 1000m, Slalom Mixed team event
Cycling
Add M & F Individual Pursuit, M & F Kilo TT, M & F MTB downhill
Equestrian
No Change
Fencing
OUT- M & F Epee, sabre, foil team events
IN - M & F Combined weapons team event
Football
OUT - M U23 tournament
IN - M Open age tournament
(OK, FIFA and the big clubs would block it but you can dream...)
Gymnastics
IN - M & F Tumbling
Golf
IN - M & F Team match play
Handball
No Change
Hockey
No Change
Judo
OUT - Team Event
Modern Pentathlon
Tempted by a relay event but, for now, no change
Rowing
In - M & F Lightweight Single Sculls
Rugby
No Change
Sailing
OUT - Mixed 470
In - M & W 470
Shooting
In - M & W Double Trap
Taekwondo
No Change
Tennis
No Change
Triathlon
No Change
Volleyball
No Change
Weightlifting
Either add 3 more weights for both M & F or drop the sport completely
Wrestling
OUT - Greco-Roman
IN - 3 more Freestyle weight categories for M & F
Climbing
I found the speed event interesting in Tokyo but the other two disciplines quite dull. But if you're going to include it you might as well had all three events separately
Skateboarding
No Change
Surfing
No Change
Breaking
OUT - If the judges don't know what the rules are, then why should we care?, "Dude"