Pathfinder Kingmaker has a very simple solution for the 15AC problem.

They have an option to boost your dice rolls in combat. It's the default setting. If you want to go hardcore then you can set the rolls to be realistic and whiff to your heart's content.

I mean - I hate Pathfinder Kingmaker's story, but they handled implementing the tabletop rules very well. It's an extremely mature take, they know that following the rules to the letter isn't a casual experience for a CRPG.