troop levels

Why does the lavahound, pekka, and golem have one more level than the witch, dragon, and valkarie... I think it would be better if they were at least the same level. To me it just looks weird. Then again whatever... Anyone have any thoughts on this? I mean why should a "lower" unlocked troop be a lower level than a troop unlocked at a higher barracks level? To me why not just make valkaries and dragons get lv 5 max, and witches level 3 or 4 max that way its in descending order rather than some 7,7,7,7,7,6,4,5 or 5,5,5,3,4,2,3 as far as the levels of troops are concerned. Besides everyone loves to upgrade stuff! I'm not asking for a new troop or a new hero but it just seems more aestheticly pleasing to me.