I'm not against the raspberry i have one , but i don't see why its so slow at times wouldn't you just be better off using a mobile phone etc to control it all i played with one for hours and really saw no reason why the big deal a raspberry over a PC or phone, when a good ole windows or Linux PC or phone can do better . i even asked the dev they told kind of told me they are some what out dated . ( raspberry that is ) .
I am not a Raspi-boi, but they are ridiculously cheap and use next to no power compared to a "good ole" PC, whatever OS it is running.
Getting USB miners recognised and connected under Windows is a game of chance, whereas Minepeon has accepted all of mine immediately.
I am running miners on both a Raspi and a Epia Mini-ITX Linux box (Arch Linux/bfgminer on a 900 MHz CPU), I haven't really noticed either being particularly slow - what sort of slowdown are you seeing? Web interface, bfgminer text display...?
As for using a mobile (smart) phone to control your miner.. well if you have one to spare then you're lucky - but it's a little difficult to imagine running a miner controller on one (though you can actually mine with the CPU).