Ya for sure! Rivals is heavily ratings driven, there's very few scenarios currently where I'm bending those values to create any sort of specific imbalance for gameplay reasons. A lot of the ratings intertwine, so for instance a receiver with great hands might be in the right place at the right time, but a low skill QB might deliver him a hard to catch ball.
I think so far that's worked pretty well, but it definitely makes the game fairly difficult for new players who start out playing as a bad team and get whooped by the AI until they play as a good one. The goal with the skill modes is to allow new and seasoned players to tailor the gameplay to their ability level. I'm trying to find a good balance of gameplay that is fun to newcomers but still engaging to veterans in their 100th game.
Sliders, which I'm working on right now, will let players really dial in a custom skill level to tune their gameplay experience. Like the preset skill modes, those values directly scale the impact of player ratings and the effects they have on the gameplay. To be clear tho, Sunday Rivals is inherently not a sim, so there's probably not going to be a combination of values that plays out into consistent 7-6 tactical victories.