My gut says will be nice but of how much interest and to how many for how long not sure......Nice idea
I can see some players who are not v good trying it by practising loads with some lower level attribute equipment, and trying to catch a good player "off guard" by springing those sticks and balls", but only if credits were involved...............May well have it's place, but not in the serious test of skill / credits end of town.
Introduce credits and the same thing that happened with UELs will repeat. OK maybe not as much as wider circles etc and so the skill test is negated to certain extents naturally, but my guess is not as far away as all that.
See it as having a place though.
If you can do that (and it's a separate point) I know people get miffed at say L tier if just hit L90 and get to play a "careful" L who has carefully got to L tier at L90 and is still L at L100 after very cherry picking credit tournies. I do think an attribute limit at L tier would be useful as L90 - L100 is so very very very very far apart.