That's great and all that your CPs might care. But here's the reality... if someone RESIGNS, as in QUITS and LEAVES THE COMPANY they will not get recalled. When you resign you give up all rights for recall and have separated from the company.

I still want to know when you think a company would take a resignation seriously? If I were HR and received a letter of resignation, why wouldn't it be taken as such?

I wouldn't resign my seniority if I didn't have to. It's a hard decision to make and I certainly understand the reluctance to do so, but we always have to make hard decisions. It's something that should be taken seriously... from both sides.