Let Apple know. Numbers->Provide Numbers Feedback
It can certainly be annoying when trying to reference adjacent cells and the column widths are smaller than default. I prefer the formula bar up in the toolbar (i.e., in Numbers '09 and before) where it is never in the way. The silly thing is they have something like a formula bar at the bottom of the window but it is for display only. So, real-estate-wise, it takes up the same space as a real formula bar but is less useful. I wish we had a choice to use a formula bar on the toolbar vs on the cell.
While we're at it, I wish we could turn off the "smartness" of the formula editor because it almost invariably screws up my formulas when I try to edit them. It inserts commas and plus signs in that I don't want and will delete other things as I try to edit. Too often I have to "edit as text" just to get it to quit. Something between the normal editing features and "edit as text" would be nice (the colored cell references are nice and the bloated parentheses can be handy when debugging, though far from necessary).
And I detest the replacement of / with ÷ because ÷ looks like + in that teeny font we cannot change. And I don't care for it replacing * with ×. This is just more silliness or trying to be cute.