My only level 80 is a ranger. I don't pay much attention to my pet (swap it out if it's health gets low, occasionally trigger the F2 attack--but that usually doesn't actually take effect so, meh) and I seem to be doing fine. I leveled mostly with shortbow/longbow, though now I'm running with shortbow/axe and torch. The traps are the only useful utilities, I don't think I've used anything else since level 25 or so. I believe a dev has acknowledged that and it's being worked on, but who knows how long. Hopefully at some point they'll at least fix the main hand sword rooting issue so I can try a power build with longbow/sword (and some offhand, not sure what yet).
My alt is a necromancer. Currently level 28, but after a couple hours of getting pummeled to death in Brisbane Wildlands last night, I am about ready to start leveling someone else. I've tried scepter, staff, dagger, axe, minions, wells, no change seems to matter, I don't get drops and it takes forever to kills things. It's very frustrating; my main the ranger was much less stressful to level up (I realize this could in part be due to my playing partner having an engineer this time around vs the warrior he played with my ranger, but it doesn't seem like that should matter that much). I spent some time today looking over builds and reading various posts about builds and which skills and weapons are best, but with the list of necro bugs so long I don't even know which skills [i]work [/i]correctly let alone what combination of them kills most effectively.
Anyway, my complaints aside, you've convinced me to at least give her another go. Maybe I can adapt one of these builds to my non-80th level self and make leveling less painful. A lot of the condition/boon skills don't seem to be useful in low level areas, as I rarely see enemies with boons on them, though.