Why stop on FPS? Let's then, if you chose to use multiplatform, make the PC users go with gamepad only and ban mouse and keyboard, after all, console players don't have that. On PC, let's not allow to map your own keys or change the sensibility of your mouse. Let's also add some latency so all players enjoy and equal internet connexion. Let's use low settings and make ever so little graphical improvements so that a lot more players can enjoy and have accessibility. Let's only use HD resolution also, just in the spirit of the previous argument. Or better, yet, let's just accept players that have a multi display setup (3) @144FPS locked, full details, 1Gbps fiber optic internet connexion. Nothing bellow.The others cannot play! See where I'm going with this?
If you don't like that others have more than 30fps and change settings, why not doing it yourself? You like 30fps better, then just use MSI Afterburner and limit the FPS for every game. Lower that in game settings and enjoy!
There are a competitions out there in which you can use your own "stuff". Racing for instance.