I have pretty good legs even w/o training them much so I mostly just focus on upper body. I can put muscle on my legs pretty easily but have been there and done that and really don't care much about them being big. But I do care about looking lean and burning calories. Recently it hit me that If I care about being lean I should try to add muscle anywhere as easily as I can. The metabolically active muscle will mean I am burning more calories maintaining.
If you can readily add muscle anywhere do it because it makes it easier to stay lean.