I understand your concern. Back in the good "OLE" days , when I raced, Tulsa ET break was 0.0 to 12.99.
The other class was 13.00 & up.
But we also ran bracket racing on a 4 tenths Pro Tree, not many, if any delay boxes or Trans brakes during that time.
All the cars , dragsters, & motor cycles ran together.
The only way that the slower cars could be separated , would be to split No-E into two ET breaks.
That ain't going to happen, unless car count triples & then it would depend on if there was enough to make a 13.99 & up ET class.
Alot of ifs.