I would like more maps. Not bigger maps. You have to remember that third-partying has just as much to do with map size as it does with server cap. Kings Canyon with less players would be an equally reliable way to prevent third-partying.
I'm saying this despite the fact that I have no issue with getting 'third-partied' myself. It's possibly the only meaningful difference between battle royales and the thousands of other shooters available. I can't imagine why you would hang around a game that is purely BR for any reason other than its popularity when you have countless other options.
You especially can't expect 60 random people to conduct themselves as overly-polite sportsmen. BRs are more about randomness/taking advantage of unexpected opportunities. If you want some control over the games fairness you're better off with an esport title. Or waiting to see if this game eventually includes game modes that follow a more traditional shooter format.