...they were really not useful at all except against boss mobs or occasionally against packed champion mobs.

That should definitely change.

And then again, the other 2 crusader armor abilities are outright useless, except for the movement of the jump.
Both jump and rockets are THREE meters AE range, this seriously looks like if no dev ever tried this themselves. -.-
Their dmg is puny, not worth the focus at all for both.
The rockets have ONE MINUTE CD, and their CD/focus-cost make them both about useless for regeneration through spending focus.
Again, quite underwhelming, if not to say disappointing, just as if no one ever tested these.

jumping is fine( ish ) sometimes you will jump at a corner rather than over it but it's alot better than before.