I am nere to gathersome disagrees only..seems like a perfect place
map 8 rewards are barely better than map 7 with modifiers, but cost twice as much in tickets. Other than for the "fun of it"... there really isn't much of a reason to do map 8 yet (unless you can get a path that is better suited to your roster than your map 7 assignment).
modifiers keep the game fun and interactive, not as boring if you can’t play wit them them go to a lower level