CapnZapp
Legend
There are too many desirable things you might want to do with your bonus action.Agreed,
However, the point is that this can be what TWF becomes; if the principle holds true. Something like “whenever you make a melee attack as a bonus action, you can also make an attack with your offhand weapon”.
Thing is, I’m not sure if the principle does hold true, and if it would solve enough of the problem to be considered as a solution.
It would still mean TWFers would be barred from, say, a magic item that lets you take the Dash action as a bonus action.
I would never take TWF except in the most magic-light of campaigns, and probably only in a feat-less game as well. (My own games are the polar opposite of that)
Making a choice at level 1 that you only pay for ten levels later, a cost you're probably not even aware of, is the reason I dislike the design of TWF.