Why are there no more OLED displays?

Does anyone know why only the Tivo Series 3 has the OLED display at the front? Why did TIVO abandon this feature? I know that the new TIVO's have 6 tuners, but that doesn't mean the 'now recording' display could scroll through all of the tuners.



Was it that buggy?

Or just not that popular?



It is too bad that TIVO doesn't have some kind of USB 'OLED add-on' for the newer TIVO's.