You can cheat by changing your split-by values to contain the actual data:
... | stats count by foo | eval foo = foo . " (" . count . ")"
Keep in mind that this will mess with drilldowns!
It is working but now instead of field values it is showing the field name. Like if I had field values yes & no under the field foobar,it is showing foobar(5) & foobar(2) instead of yes(5) & no(2). Anything can be dne about this?