Nothing "esoteric" about wanting the tempo to remain as is when changing to a new style. Very common actually, except to those who haven't progressed that far with their instrument...and, I'm pretty sure Roland and Korg, and perhaps Casio can do it as well.

What would be ridiculous, is a person buying the Mediastation, expecting it to do at least the very basic functions of an arranger, and then finding out it does not.

Just because these features are of no use to you, doesn't mean they are unnecessary to others, and since the Mediastation is a bit of a Yeti, the only way to expose these things, is by asking questions...and don't worry, I won't ask you anything.

Ian