When you reach max level, it should remove the bar altogether.

[KillBurnDeluxe]

Maybe just add an icon somewhere that says [65] or [MAX] to indicate max level.

The exp bar is especially annoying when doing anything related to the top half of the map.

[SirGouki]

I suspect he doesn't do this because the XP Bar draws your level. But, this would be easy to implement. Just code thats similar to:

if(level >= 65)
{
//draw level text
}
else
{
//draw exp bar
}

Maybe when modding is implemented someone can mod it?