It'll never be a game changer while the spacing is such it so easily clogs with mud.
they don't clog with mud. 90% of the cassette is air.
The air between the gears does clog with mud. Try riding in it sometime. The 8/9 speed spacing was about as far as it was sensible to go in the gloopy UK climate.
I spend 95% of my time riding trails that have no mud at all.
I drive different all terrain vehicles, there is more to shedding mud than 'air gaps' anyway.
Don't know if I could say six speed was much better than eight speed at shedding mud.
Hard to tell about any of these things when most 'research' and comparison is highly subjective.
It does seem logical that stuffing 11 cogs where there may have been 9 might leave less room for foreign matter to fall away.
I would have to see some in depth trials.
The doctor diagnosed me with hereditary diarrhoea. I can't understand, I wear a kilt.