For example if I am playing $3R 180 man and $8/$15 180 man, and MTTs, it would be nice to have different stacks for the different games, because they have different structures, so it would be easier to play different tournaments with different structures if I could stack them separately.
Or one stack with 45 mans and one stack with 180 mans, etc.
Or one stack with 45 mans and one stack with 180 mans, etc.