Agreed @kregora ,
Lots of the involved game mechanics are certainly BR...
Now I am no BR expert. At all ! 😀
But the Gun Master game mode could in principle be added to the Portal Creator. And that could then be the basis for players creating maybe not direct copies of other BR game mechanics/gameplays, but at least become pretty close to the same core principles of one against one and everybody else. And last man standing would be the winner.
Again, it would take that EA enables that we can hinder a player to spawn in again after first death. Personally I know that would be a very simple logic functionality to enable in the engine. Question is just if EA will add it or not, for it to be available to us. As many players would probably not like the fact if such 'feature' would be abused in other portal creations.
Aka a game creator could set up a server, which could block a player from respawning if player is above a certain k/d score rate. Or block a player from respawning back in again if already having amassed a certain number of kills by piloting an aircraft or by driving a ground vehicle.
So many potential abuses could be coded into the 'rules' for a certain server design, if EA gave us all the options.
Maybe they don't want us down that rabbit hole..