I agree. I setup a media centre for my PC just to have a fiddle (and watch a handful of things while web surfing etc) and find the "ooh, I have a clash, how can I overflow things" a real real pain in the backside to see the clashes (mind you, the EPG layout fullstop regardless of devices is difficult to see clashes with the vertical layout anyway).
I was only thinking this today actually:
It is about time ICE allows you to setup priorities against shows, and let you setup options for how many tuners your primary device has. If more than tuner_number-1 clashes, overflow to device 2 (where the overflow is an option).
(I added the overflow bit, I was only thinking today again about priorities). Currently I have priorities and keywords setup in PerlTGD (using ice xmltv as the source) for my Topfield 5K, and it works brilliantly. It is just a shame that I have to essentially duplicate record nearly every show, for fear that ICE may ditch something in the exclamation clash thing that isn't also setup on the 5K.
Of course, overflow things should only be supported on interactive PVRs.
ICE have always argued that clash detection should be on the end device, but how many PVRs are doing this now, how many of any Interactive supported device is doing this? I think it is something that can make ICE much more useful for capturing all that you want to see.