and there is talk of the UCI ditching the limit.
As for adding weight, more a case of redesigning the bikes, it would also need shimano, sram and campag to come on board to bring disk brakes into the pro peleton. After all pros ride what they are told to ride, if the sponsors don’t make it they won’t be riding it.
And fundamentally, what are the advantages of disc brakes in a race environment. Do they allow rims to be made any lighter, do they offer any aerodynamic gain, do they make locking brakes less likely, do they weigh less than the calipers they replace, are they going to cause problems for neutral service, what about wheel changes. etc.
I can see some benefits for the non racing commuter type cyclist, but i am really not so sure about on a race bike.