Imagine the arguments about whether it was intentional or not....Could try a couple of things like hockey.
A penalty corner - if the ball if knocked off the back of the pitch on purpose then you have the goalie and four defenders on the goal line and then from the attacking side kick it to someone outside the box. The game carries on from there. All other defenders at halfway. Attackers as many forward as they like.
A normal corner - if ball unintentionally kicked out for corner then a restart 25 yards from goal in line with where it went out. The ball would need to go five yards before going into the box.
I have absolutely no idea if either would work but it might be fun to try.
Football should definitely adopt the self pass rule from hockey where a fouled player can take it to themselves. So if fouled you can just dribble it and if someone touches you without retreating they are booked.
I dont think we should try scrapping offside because unlike hockey it is too easy to go over the top.