I myself do not host anymore since it's a pain to get ships of at least equal ability when it comes to CV's since a FW only ship vers the same ship thats a BW really does not balance out the room.
Yet host how you like, many of us want manual balance back but it's a fleeting hope that will more than likely never come to pass. Most of the games i play in NF pretty much bore me into sleep anyway so i just kinda go through the motions.
I agree with you that there is no need for 20/6 120% just go when it's mostly balanced, yet i like going with 20 bb's more food to snack on usually.