The hunting community has had over 20 years the clean its act up, to ensure that the spirit of hunting can continue whilst the bloodthirsty side of it ceases. Given how frequent 'accidents' are in monitored hunts (where participants are more likely to be careful), the lack of evidence of actual trail laying, It's clear that a large number of hands, if not the majority of hunts, are exploiting illegal loophole to create a smoke screen.
Remember even in monitored hunts, in 98% to 99% of them, no trail is seen being laid!
If over the last 20 years efforts had been made to change this, or they'd moved to clean boot hunting, then we wouldn't have this issue. The fact that so many refuse to move away from a fox scent kind of says it all. If you're not actually wanting them to hunt a fox, then why would you train them to hunt that scent?
The concern over the dogs also feels very disgenous given many are shot when they get old, or if they're unsuitable as puppies. Also, they've had 20 years to switch to other breeds which are less aggressive to the fox, and have chosen not to do so.
The idea of pursuing a trail runner, with genuinely no intention of bloodshed, could be really good fun, and could inspire a new generation to have fun on horseback.