This is NOT what I meant. If you use "external midi clock" setting, this would be THE clock. (I use Origin with external Clock, so please don't take that away...!!!)
But in those cases where you use internal clock, preset tempo would be nice feature IMO. For example, if you make multi preset for some special song, you could adjust the tempo beforehand. And of course, if there was a tap tempo, then you could easily fix the tempo on stage.
But as said, external clock is great tool and I have managed syncronize Origin to Korg Radias for example very nicely. They go nicely together (especially when tempo comes from Radias which put into Origin's audio-ins and mix them together...)