The issue with the price of the "unwanted" bull calves dairy farms is not going to be solved on dairy farms despite popular belief. There is just too many calves, as simple as that. Using beefier genetics is going to worsen the situation and not "add value" to the calf. If we all used belted Galloways for 2 years, every calf would be wanted.
The dairy herd and, more so, the suckler cow herd has increased in numbers over the last number of years and the increasing in the market demand is not keeping up with it. A total rethink of the current system is on the cards.
If BPS money was redirected a lot more heavily on using smaller beef animal semen (eg. Dexter, Angus, Belted Galloway), no top up for dairy or continental breeds, then it'd have more of a positive impact, and let's be honest, probably more profitable but less fashionable.