Yeah, it could be possible to only ever need the mini and 80% is perhaps conservative. But, I as much as I find my Bambu Mini can cover the majority of my printing needs these days, I still need the print volume my Prusa Mk3s has for a very good number of practical prints I design and print. The real world often demands real world size and hates pieced together part designs lack of strength. And I still often need to resort to my metal working shop with lathe, mill, drill press and welders to make serious parts because plastic just ain’t it.