Well, I get RPM and throttle position from my Emanage. I use analog input #1 for my wideband AFR (although it's a bit crap at the moment because that signal is not linear) and the second one for intake temperature. Again not prefect because it's not linear, but it's near enough. MAP is pretty pointless as you have a boost sensor anyway, unless you haven't got a FCD in which case you can use the E01 as one.
Speed is a good one for one of the pule inputs, because if you download the latest firmware for the E01 and put it on a SD card you can have speed-related boost maps.
The outputs are pretty useless unless you want to use it as a FCD.