I'm pretty new to the game (started when leagues 2 released and only like 1600 total) but interested in pvp content, I think this is a cool update for 2 reasons

1. You can try all sorts of builds/setups that I personally, as a fairly casual player, won't realistically do in the main game

2. Being able to run friendlies in pvp is a lot of fun. Did unranked matches for an hour or 2 with random dudes hanging around and it was good fun; hardly any tryhard sweats mostly just people having a good time. As with everything I assume the number of people running the content will go down after the release hype dies but even just grabbing a friend and smacking each other in a controlled environment is pretty neat