Isn’t this proposed “PP Open mode only” actually Sandro trying address a much bigger problem? Which is to save Open mode and make it relevant.
There’s no threads advocating or game design changes proposed trying to lure, coax or force people into Solo or PG. Solo and PG players seem to be pretty happy with their game modes. Open is the broken mode, where “play the game the way you want” is pretty much impossible, unless you’re willing to accept non-consensual PvP and become some other Commander’s content. Hopefully, FD will eventually fix Open so it is a more enjoyable mode for the PvP crowd. I’m a firm believer in all modes being equal, and equally enjoyable for those who play in their preferred mode.
I don't think it is Open they are trying to fix, it's PP.
The problem is that PP kind of revolves around players undertaking opposing activities, which makes it kind of an innately PvP activity, although not neccesarily in the sense of combat.
However, using combat to thwart the opposition is part of it (more so for some factions than others), PGs and Solo currently allow players to bypass this part entirely. This gives them an innate advantage, and allows them to negatively impact other players with no counterplay.