ash in our regressive league my team would have 24 usage points according to your system(starters only) is regressive league much different or is that going to ruin my tittle chances?
I assume you mean with your starting five (always judge usage by the FoF rule - five on floor)
That question requires a complicated answer.
There are two issues with "too much" usage. The first (and most important) is wasted salary. Usage costs money. Guys with identical stats in every facet except usage will have much different prices because of usage. Usage costs more money. So in an optimal sense, you don't want to waste money on possessions players will never get.
But you are playing in an uncapped league. So, in that sense, no, it doesn't ruin anything.
It is, however, much more complex. Let me make a team with too much usage real quick:
pg '08 Nash
sg '08 Kobe
sf '88 Barkley
pf '79 Moses
c '62 Wilt
That's 26 usage points. Ignoring the fact you've wasted a ton of salary on possessions that will never happen, what's wrong with this picture? You have two guys with 60% efg (nash is actually 59.7; Barkley is over 60) and another with almost 55% (moses). But you have another guy with much higher usage in Kobe who barely has 50% efg% and then Wilt with even higher than that at just over 50%. So now you're taking shots away from guys who have a much better chance of making shots and giving them to guys who have a lower chance to make them.
pg '08 Nash
sg '01 Barry (brent)
sf '92 Rodman
pf '88 Barkley
c '79 Moses
Now we're sitting at 13.5 points of usage. Our top usage guy is Barkley, who has more than 60% efg and gets to the line a TON. Our next high usage guy is Moses, 55% efg and gets to the line a lot, too. Next highest usage guy is Nash, 59.7% efg ~ doesn't get to the line as much. Our fourth highest usage guy is Barry (over 60% efg). And finally, our final guy is a tier-6 usage guy who still shoots good when he does shoot but more importantly doesn't take away possessions from the guys who shoot fantastically.
So we've taken and almost halved the usage, spent way less money, got better boards & I guarantee will perform much better offensively, both shooting the ball and getting to the charity stripe.