Jump Pack Intercessors - Worth it?

I’ve been looking at building out a more mobile component to my army and with the new terrain rules, having a unit with the fly key word seems like a good choice.

I have 2 3 man units of TWC and Bjorn for speed, and a wgbl with headtakers in a repex, but ive found take and hold less than ideal(playing dark angels most often and their termies just whack mine most days).

How have people been finding using a more mobile style army in a disruption or priority assets disposition?

do JPis with a captain or chaplain with jump have a place in it?