It came down to this for me:
Do I really want to go work for another company, for lesser pay, with less benefits? No, I'll keep the current job I hate, so I dont have to work for some other c-appy job at another $hitty company with zero tenure and less vacation time.
While the package may be appealing and its alot of money for someone like me with 16.5 yrs, its just not worth the risk. Company will lay me off when its time, there is no need to rush the process early.
It will s--- though, when I am laid off, knowing I could have had more money in my pocket due to the increased severance benefits offered now.