Hi Hadro,
I agree that faster PERM reduces the LC substitutions. However, I'm afraid that the Visa Retrogression pushes the people to search for an Employer that has an LC with PD "Current".
I also hear that the unscrupulous employers with LCs that's PD is current have increased the price to even like $50,000/-. I do not have any evidence to prove it. But this is what I'm hearing.
Whatever USCIS does, it only helps the unscrupulous. I'm not for all out ban on LC substitutions. However, USCIS should be extra vigilant and allow only reputed companies use it.
Thanks