No need. Gotenks is their technique that keeps the two fun and dopey.
Defeats the purpose of having the dance.
Now if toriyama came up with a way to use the dance and the earings, hear me out, that could make the fusion last longer, that would be cool.
Like lets say whis tells goku about how the origin of the dance came into being and said that a true fusion can happen when the warriors perfom the dance while the earings were on creating an, i dunno, a stable fusion that the warrior can disperse when ever he feels like it. That wouls be cool, and since golu and vegeta dont want to fuse this is an opportunity to bring back Gotenks strong enough to fight against godly warriors. Thats just an idea though.