Variable row height: Rather than just normal and compact have either a middle option or let us set the height.
Row/Cell styling: I may want a particular column to be bold or a certain cell to be have red text. The best way may be to have a CSS style or class field with access to self.
Zebra striping: nuff said.
Multiple buttons/icons: I think this may be a repeat, but it would be nice to have more than one custom button, but also let us select top or bottom of table separate from the rest of the paging component.