swains identity change

with these high CD on his ult, it completely changes how you play swain, mentality wise. swain biggest weakness was clearing. you fixed that. great, but now we are back at it again. im scare to use my ult to clear. Dont get me wrong i still crush my lane, but thats cause i know how to play him.

instead of 20 sec can we go down to 15 sec?