Best way to keep it realistic, is to not fall in the WWE'13 trap. Stay aware that you need a main event & a undercard for every show and don't just hire the best people. In WWE'13 (the Attitude Era game) the roster mostly consisted of main event & upper midcarders. As a result someone like Razor Ramon ends up becoming your midcard-fall-guy. If you keep the numbers of top prospects and future world class stars low, you will automatically end up with a more realistic roster and more era-appropriate booking.