Need opinions, mobile and dynamic classes

So, I'm creating a new character, (I already have a reaper (main) a druid, a daredevil and a herald) and my playstyle fits with mobile and dynamic classes (maybe some exceptions, but I want this one to be like that). I need advice, since I haven't tried the other classes (only guardian, but it doesn't fit my playstyle), to tell me which of the other 4 (not including guardian, as I said) you would recommend me. ALSO, I don't have PoF, but I have HoT, for more info about what I can play. I've been thinking in engi (would probably be a scrapper) and ele, but idk what to do. Please help me :DThos will mainly be for WvW and some PvP.

Forgot to mention, it would be primarly for WvW and PvP.