I've been hosting clean racing events in Gran Turismo since 2009. League races, club races, & open lobbies. In over a year & a half of racing in public open lobbies in GT6, I've only had to kick 2 players. The only way I've been able to host such clean & respectful racing is with the following host options;
TEXT CHAT Having a the ability to communicate with players, & having a written record of it in the chat log, goes a long way to explaining what is required of them in a clean, respectful, & gentlemanly lobby. I can also warn them instead of kicking them, which works most times.
HOST KICKS PLAYER Being able to remove blatent trolls stops them from ruining others races, online becomes fun, & more people buy & play your game (also Sony gets more PS Plus sales). Being able to do it via voice commands whilst racing, so that a host doesn't have to quit back to the lobby, would make it an even more superior function.
PSN PLAYER BLOCKED LIST Being able to stop trolls from permanently entering any of my individual lobbies acts as a good deterent to any would be bad drivers, & protects me from having to deal with the exact same trolls over & over again every single time I go racing.
LOBBY NAMES Being able to name my lobby "CLEAN OR KICK" stops many bad drivers in their tracks as they simply won't bother turning up. Likewise, many people like dirty racing & for them to be able to name their lobby's "DIRTY OR KICK" helps players find the kind of racing they want, & keeps the dirty guys out my clean lobbies. However, lobby names in GT were too short, having more characters would be very welcome indeed.
DISABLE VOICE CHAT In the heat of the moment people often times say something they will regret, by forcing voice chat off for the whole lobby it encourages people to think before they type text, & thus avoids most arguments from even happening in the first place. There's nothing worse than having a troll in the lobby swearing his head off, & not being able to kick or silence him. In my GT lobbies I always have voice chat off & politely ask everyone to keep the language as clean as the racing, pointing out that some players might have their children present with them. That thought takes care of 99% of any nastiness that might have otherwise occured.
Without these fundamental options, I wouldn't have been able to police behaviour in open lobbies, & the huge communities of clean & gentleman racers in Gran Turismo wouldn't have been possible. In Project CARS I can't do any of these things, which saddens me deeply. I don't want to race in closed lobbies, I want to race in open lobbies but with the controls in place to ensure that all clean drivers have fun & want to play your game even more.
In GT I would also text drivers on PSN the rules for each type of racing we did, which was very time consuming, but extremely beneficial as they could decide to agree & race, or disagree & leave (which some in fact did). You could make life a lot easier if there was a facility in the lobby for hosts to write up the rules & regs for their events.
I thought with all the community involvement in Project CARS that all the basic options & then some would already have been implemented. I really love the physics in this game, the FFB through my wheel is incredible, & the feel of driving is spot on for many cars. But as an online only racer who mostly races in open lobbies, the game has no lasting appeal, so much so that I have decided that spending money on PS Plus or any other in-game DLC is pointless.
I would love a fully featured multiplayer experience, shaped & molded by the Project CARS community, & would love to see this game succeed not only as an accurate sim, but as an awesome online racing platform. Thanks for reading this long post, & all the best in hopefully sorting these issues out.