please add a clock timer so we can see how long we've been going for. and yes, it'd be useful to turn off some of those background effects. plus the changing nightime (sometimes actually too dark to see) and the dayrise can be rather annoying & irritating on the eyes.
difficulty from tournament 1 to 2 goes from simple to stupidly hard.
also, add an ingame mute. that engine noise is WELL annoying. also work on screen flicker, its wickedly distracting