Sports I don't mention I think are mostly fine.
Athletics
I would remove the mixed 4x400m relay. I personally would like a men's and women's 4x1500m relay, a mixed shuttle hurdles relay and a men's and women's eikiden (essentially a 4x10km road relay, but with the distances adding up to the distance of a marathon).
Artistic Swimming
Adding a mixed duet
Boxing
Either have seven weight classes by gender, or eliminate.
Breaking
Add it back. It just makes a lot of sense from a cost/benifit point of view given it re-uses an existing venue and has a very light athlete footprint.
Canoeing
Oh boy. I have the kayak cross event and I would personally love to see it eliminated, I believe it is the worst variation of snowboardcross ever created.
Not sure what I would do otherwise, I'd like to see six slalom events maintained, but I'm not sure what I would add. Maybe some sort of mixed team events? I don't think the mixed C-2 ever took off, but maybe a timed mixed event with both C-1 and K-1 paddlers?
I would like 5000m K-1 and C-1 events.
Cycling
For road cycling, I would want a team time trial (not the mixed relay time trial, just a four person men's and women's road time trial). I would also like to see a criterium in addition to the road race.
For track cycling, I would add the 1km time trial and the individual pursuit.
I actually like the current omnium format, even though it's basically just a glorified points race.
For mountain biking, I would add a mixed relay to cross country, and also the 4X event (which is what kayak cross wishes it was xD )
Equestrian
I would get rid of dressage (or, if I was the IOC, I would ask for a lot of horse welfare and judging changes)
Field hockey
I would bring back sudden death extra time! Way too many knockout matches go to a shootout.
Football
Increase size of women's tournament to 16 teams.
Golf
Adding a men's and women's team event, four golfers per teams, calculated from the first two rounds of strokeplay.
Would also add a mixed team event, with two golfers per team.
Gymnastics
I would make it very clear that the days of rythmic being women's only and of women's gymnastics having two less aparatus than men's gymnastics are numbered and that there needs to be a plan to change that.
I would add synchro trampoline.
Judo
I would remove the mixed team event, and add a men's and a women's team event.
Modern Pentathlon
I would eliminate this sport.
Rowing
No coastal rowing. If we wanted to cut events I would consider removing the fours and the double scull events.
Sailing
I actually don't know enough about this sport to have a strong opinion on this.
Shooting
I would standarize the format for the men's and women's 25m pistol events.
I would change the formats of the team events, to have an eight team bracket after qualification and head to head matches.
I would stop the rotation between the team trap and the team skeet events and simply include both.
I would add VAR to shotgun shooting xD
Skateboarding
I would add vert
Climbing
I would have three separate individual events (speed, lead, boulder).
Sufring
I would add a mixed team event (similar format as what they do in the Aloha cup)
Table Tennis
I would replace the team event with doubles.
Taekwondo
I would have seven weight classes rather than four.
Weightlifting
I would have seven weight classes rather than five.
Wrestling
I would eliminate Greco-Roman wrestling and have seven freestyle weight classes.
Generally I think the IOC should find cost cuting measures other than limiting the athlete cap. I also think that roster sizes in team sports should be increased while also limiting injury replacements.