Hali was totally spent the second half of the season and a total nonfactor. He's also getting nicked up a bit. He's got some serious wear on the tread. I'd let him go after this year so yes, I agree: go with pass rush.
"My glutes are shutting off. So I tried to activate my glutes as best I could in between, but they never stayed activated." - Tiger Woods 2/5/15