There are spots open in Pro that needs to be filled. To fill these spots some teams need to skip a division. So there is no point discussing is it fair that a team will skip a division, some teams must do this.
Does a Lite team deserve that open spot after they have failed to get a promotion to Pro by playing in Lite? In this case they would be skipping a division too. Because they didn't deserve it by playing. I don't think that Lite team would deserve the open Pro spot any more than a new team. That's why every team should be able to make an application for open Pro spots.
If you want to make it easier for teams in Lite to get in Pro division by playing, simply increace the amount of relegations in Pro and promotions in Lite in ECL seasons. Lite teams must prove they can get to Pro by playing. Just like Pro and Elite teams/players have been doing over the years. If Elite/Pro players form a new team, they would deserve to try get that open spot in Pro by application, those players have proven them over the years, it's not a shortcut.