When configuring the DelSig there is a mislabeling of input buffer mode
as meeting R-R performance. As shown below industry standard includes
the rails in CMI range, which the input buffer does not.
However, that being said, you do not label bypass buffer mode as R-R, which
it should be. Further you should call it "R-R Plus", as it exceeds R-R performance,
and as such is very useful for some design problems.
Lastly you could clear up a lot of confusion, as witnessed by the number of forum
postings, if you offered those images of input range tied to input range selection
box, ie. show user actual range he is going to get graphically.