Feature request: keyboard navigation of list view

In the font window, when viewing in list view, I notice that when changing a value (say LSB) I can tab over and the next value to the right (RSB) is highlighted and ready for text input. I would find it tremendously useful if I could also hit Return and have the value below highlighted (e.g. LSB of the next glyph).
This would be similar to how text entry works in Excel.
As it is, changing values requires mousing so far as I can tell and is pretty unwieldy.

I also think a tab at the last column should advance to the first column of the next glyph, not the same glyph.