Hey there BKC, here's a video idea I thought you might like to add to the pile -
I always hear about how Tyranitar is "good despite it's typing, not because of it," but I wonder sometimes if that's really true, for example if it lost its dark type it wouldn't be as good of a pursuit user, if it lost its rock type in favor of, say, ground, it wouldn't have the sp.def. buff in gens past 3...