I don't know amy DSLR with digital zoom, it isn't needed. Just cropping the picture is the same thing as digital zoom, which means every camera effectively has digital zoom.

Some DSLRs have a manual crop feature.

This means that with just my 17-40 and 75-300, with some cropping I can match or exceed the zoom range (when also comparing the image quality) of any compact I've come across.

Now admittedly that combination is heavier than a big zoom compact, but I think it also falls short of the bag of lenses you are imagining is needed.