Interesting thoughts Craig, I have looked at Scala but was not impress with the price or learning something new, I have demoed SKunkLabs Liquid media and know of LiquidCast but I prefer using Opus. What exactly does infochannel do? Right now I may just be able to get just a few kiosks or signage contracts but I wonder about keeping them updated and knowing when attention is needed.
I have started to look at putting a system together around Opus and I am trying to figure out the best way to configure Windows XP minimally for signage and kiosk solutions. Interestingly though my worries are with locking down Windows XP and making sure the boot time remains at a minimum and I have just learnt of Windows XP embedded see this page
http://msdn.microsoft.com/embedded/howtobuy/default.aspx the initial outlay is high but the price per system is interesting but I am only able to start on a small scale and the initial outlay is forbidding.