I'm all about more events so I'm ready for people disagreeing with my "utopic" proposals.
Archery: mixed team [+1]
Athletics: 4x800m or 4x1500m relay [+2]
Canoeing (Sprint): two women's C events and men's/women's K-1 5000m [+4]
Canoeing (Slalom): men's C-2 stays, 2 out of 3 team events (women's K-1, men's K-1, men's C-1) [+2]
Cycling (Track): keirin goes in exchange for 500m/1000m time trials and men's madison [-2 +3]
Equestrian: out with dressage [-2]
Fencing: full programme with all teams [+2]
Football: I like LDOG's proposal of men's futsal and women's football [+-0]
Gymnastics (Trampoline): synchronised events [+2]
Modern Pentathlon: mixed team relay [+1]
Shooting: a men's 300m rifle event and 10m running target for both (also, what ever happened to women's double trap?): [+3]
Swimming: mixed 4x100m relay [+1]
Table Tennis: doubles instead of team [+-0]
Taekwondo: at least one more category for both [+2]
Triathlon: mixed team [+1]
New sports not being introduced for Tokyo:
Air Sports: whatever Bearas would suggest [+2]
Boules: pétanque singles [2]
Inline Speed Skating: various distances, road only (and I don't care about speed skating already being at the Winter Games) [+6/8]
Orienteering: middle, sprint relay [+4]
Squash: singles [+2]
Wushu: taolu only, I know some would really hate this sport at the OG [+6/8]