It's already been simplified? I don't think you would want to do that any further or you might as well go ahead and change the offense.
I agree with this.
Think about it, before we played Missouri we were running a very complicated multi-set offense. We had power I, shotgun, ace, and many others. Callahan's playbook was 800,000,000 pages long and was very complicated, which forced players to have to tirelessly work with the playbook to understand the offense (perhaps players were so worried about the offensive scheme they forgot fundamentals?) Watson retained a lot of Callahan's playbook and kept going at it with the West-Coast multi-set offense.
After Missouri, we primarily switched to shotgun spread formations. I can't even tell you the last time I saw the power I on the field when it wasn't 3rd or 4th and short. I know we have done power I but it has become very rare. Even with the shotgun spread attack, however, players need to know the playbook and the importance of timing (which is a key component of the spread offense).
Dumbing down the offense (for lack of a better term) would result in us changing our offensive scheme again. I don't think their is any offense that could be easier to run then perhaps a power run game, but even power run option games means players need to understand schemes, strong blocking, and you have to have a quarterback to run it well.
TL
RSimply put, dumbing down the offense more would result in a change of offense, and I don't think there is any offense that can be learned simply. Put players in when they are ready and understand, because this type of offense doesn't have the ability to include a lot of young players.