I would love to do a Death Tribute. However finding guitarists with the required skills and drummers is a little tough. Mind you I'd have to do some very hard work!! lol
My thinking has always been that a tribute band should not really be of something that still exists. It seems a bit pointless tbh.
I use the EHX bass soul food most of the time, which does exactly this.
I don't go overboard on the gain, but the blend helps it 'sing' in context and I feel that this is a key ingredient of my "3d" sound