I don't know if I would go that far, I can tell you've put a lot of work into it! However, as for "marketing" it I think you need to find something that sets your game apart from the others.
For example, in our game, which is 5E-based, we're adding proficiency bonus to damage. Why? Because it is a simple and easy way to represent your PC (and other creatures) become more lethal. An Orc has 15 hp, but it is rare for a mid to high level PC to kill an orc with a single hit. However, if you are 10th-level, the extra +4 damage based on proficiency bouns helps a lot. Instead of doing 1d8+6 (say dueling style with +4 STR), which only average 10.5 and barring a critical, cannot kill and orc, you are doing 1d8+10, which averages 14.5 so has about a 50/50 change of taking the orc down.
We did this because a number of new players to 5E kept wanting to add proficiency bonus to damage rolls as well as attack rolls.