Why aren't we copying real life formats? Currently we've got an F2 Shootout going on with 8 people where's real life it's 15 Drivers. Same with formats of meetings, why do we have to have 3 heats in F1s? Why can't we run to the real thing formats in both formulas? Cuts down time on meetings and sometimes waiting around which everyone hates. This could also open up to bring back some of the double header meetings we used to have in the F2s, used to be nothing better than racing Coventry followed by NIR.
Bring in a full contact fun formula or something that is just fun like Cowies old outlaw mod which is relaxed on the rules and is all about having a laugh and having fun, maybe even the dreaded Bangers if there's a mod available to use.
Teamspeak.... Why isn't it mandatory? You don't have to talk, it can be muted during races but it'd get rid of a fair bit of stupidty and comments of "team racing" as everyone is in one place. It also makes it a lot easier and swifter to correct any issues that may occour during a meeting, if someones game has crashed and there's no one in the server to tell the steward that.
As Kris mentioned a try before you buy, a 2 or 3 meeting period which allows you to see what a real meeting is like and try out the formulas in a proper racing enviroment, start them off the back of the grid, a few car gaps behind the SS but also limit to 2 of them a meeting.
Most of all, bring back the FUN aspects of the league, all it seems to be now is everyone trying to wind eachother up or call someone an idiot for some reason or another. It's rare you see any nice comments in chat on the server now.
Other than that, keep doing what you're doing and running a great league!