Tell me how this sounds for a system.

We would make a system that uses the d20 SRD as a base, but has lots of Fourth Edition mechanics, as well as bounded accuracy.

What is bounded accuracy? Basically, it means that as characters and creatures level up, they don't gain bonuses to attack rolls and defenses such as Armour Class. Instead, they simply gain more hit points and deal more damage. This means that monsters never become irrelevant, and hordes of weak creatures can take down lone powerful ones.

Think of it as a more natural expression of the minions, elites, and solos mechanic from Fourth Edition.