From the recent seasons:
-Visiting no new country in season 21.
-That awful rappelling roadblock in Turin, season 20.
-Going to Osaka in season 20. I wish they stayed in Hiroshima for the full leg.
-Double Elimination in season 19.
-The second Bangkok leg in season 19, although it was good for a last minute change, I wished they went to a different country or part of Thailand instead.
-Hazard in season 19, pointless that's it.
-Doing China and India legs in season 18.
-Not casting a single team from season 13 in the unfinished business.
-The redundant leg prizes in Caribbean with all the boring spas and those stuffs.
-Using touch screens instead of stickers for u-turns. I kind of like it when teams take time to peel them for no reason. lol