I would not "commit" to anything, regionals need you more than you need them.

It doesn't hurt to take any bennies or seniority they offer, but don't hesitate to take a job elsewhere when the time comes.

Mostly these programs exist to get you emotionally invested in that regional.

If they offer you money, then off course there will be strings attached. Be sure you need the money or prefer to work there anyway before signing any contacts.