Julian's s6 personality was really amazing. I mean sure, we only saw glimpses of it, so his charm might have counted only as being of the one-note kind, but it was still interesting to watch. IMO he brought new life to the show at the time. Not to mention I always seem to fall for supposed jerks/bad boys who hide something more beneath the surface.
As for his personality now
. I don't watch the show anymore, so I can't claim anything, but what I did see of him disappointed me.
As for BJu, again I can't claim anything, but they seem like a trainwreck to be honest. I myself even liked them initially in s6 while they were flirty and fun together, but it didn't last for long.