I still disagree Tom, the games I've been to where there has been a display, everyone seemed to be more up for it (which probably helps). I certainly felt pride in seeing what our club was capable of, if only for one day. Yeah, sure, the football invariably let us down as it usually does and that certainly contributes vastly to a shite atmosphere. But it was nice to see and maybe for those first 10 minutes, it added something. When i've been to Pittodrie since they were halted from doing the displays, I can't say the atmosphere has been anywhere near as good. I'd rather have 5-10 minutes of extra atmosphere than nothing. Just my opinion and experience on the matter.
I don't disagree with your singing stand though, but the club will never allow this. The merkland would have been ideal for it, but as ever the club didn't have the will power/forsight to agree to it.