I think this is a very interesting idea at the starting category! And IF it could be implemented successfully, I think it has a lot of merit!
Others stated earlier that bike racing is more than raw Watts & WpKg. However, at the lowest levels (Cat 5 and perhaps Cat 4), USAC, is MOSTLY ABOUT Watts & WpKg, and NOT about bike handling skills (nor real racing skills).
I, for example, can hang with Cat 1s on technical descents, both very steep and shallow (except where wattage requirements go above 1000w), and where it takes (IMO) real bike handling skills (drafting, rotation, cornering, holding wheels, etc.). Even on flats/rollers, I can hang with Cat 2s and 3s and do my share of work. But, in Cat 5 events thus far, amongst many sloppy bike handlers, [with an FTP of 3.6 and pMax of 950W] I get crushed.
I do it for fun so I don’t mind my race results. And I do see (from reading dozens of our racing team reports and speaking with our racers) that it all works itself out at the upper categories. But IMO the USAC system is fundamentally flawed at Cat 5 (and perhaps Cat 4) IF the thought that it is rewarding bike handling and bike racing skills*.
*This was the subject of a TrainerRoad FaceBook discussion some months ago, and similar to driving [in most countries], I think racers should be required to take skills training clinic(s) before being allowed to race.