In my experience so far, solo queue is mostly looting and peaceful people ("dont shoot" "you friendly, bro?"), but queueing as a full squad is the polar opposite and everyone is much more aggressive. I'd say it goes from a 5-10% chance of PVP up to 80%+.

I did notice an uptick in solo PVP recently, but it might be because I started listening more closely to the sounds around me (sound design is excellent in this game imo). Gunfire ending in explosions: probably someone just destroyed ARC. Gunfire, especially 2 types of gunfire or more indicating multiple guns, ending in a flare, probably PVP.

My dream engagement atm is catching a ganker in the act, knocking them down, reviving the victim with a defib and having them administer the K.O. punch on the ganker while talking smack on voice.

I think the balance between the threat of PVE and PVP is pretty good overall, but there's some tweaks and polish they could do imo, like making it possible to see someone's nameplate somewhere. More than once I got shot at and respond, only for one of us to run around to hide and then lose each other, and then I spend the rest of the game wondering if each new person I bump into is that same mofo, with no way to tell unless they have a very goofy or memorable appearance loadout.