Option Setting for Room Drawing to Auto-Expand

Looking for an option when drawing rooms over an imported plan to have the room auto-expand by a user set number of inches.

My team currently draw our rooms into the walls a few inches, but being able to trace over the plan lines and have the room auto-expand into the plan walls 2-3 inches could save a bit of time instead of trying to pick that perfect spot in the wall.  Would really help out on angled or curved walls by just tracing the plan.

Same goes for the new Auto-fill room tool.  Make a room using the tool and then have it auto-expand into the plan walls.

Thanks