1/4 was not my type either. but try buying one 1/4 and display it next to your 1/6. you can have many cool 1/6 on display but soon as you see the 1/4 in the room, your attention will automatically be diverted to it. 1/4 is just a better attention grabber by default and will simply dwarf all the 1/6, literally and figuratively.
just save the scale for iconic characters is what i'd suggest. too many 1/4 in the room would make the scale much less special imo. to quote from the incredibles: "if everyone is special, then no one is."