Although it'll be a highly unpopular idea, banning the bumpdrafting could surely clean it up.
Some people simply can't take or give a constant push, be it lag or experience.
I had no problem getting to the front in my last session simply because several cars were attempting to bump, would gain a little then lose a ton due to nearly crashing from lag taps.
Was able to pass Simon and Joe on the outside of T1 because they slowed from bump lag.
Was also able to pull away from Yann and Ramon because they were having issues while bumping.
Trust me I know how important it usually is to have someone pushing you to the front, but the current conditions don't allow it. And yes you can get there without it.
If the practices don't get better, I surely am not going to waste my time.....