Would any of you not advice on mixing some bluebills dekes with my mallards, pintails, teal, gadwalland widgeon?

Here is my usually spread,

16 Mallards
3 Gadwall
3 Pintail
4 Widgeon
2 Teal

Considering buying 6 bluebills, since I have seen a few around the area.

Set them just off to the side.

yea off to the side just dont mix them just put them away from the puddlers

I wouldn't say that it would hurt, but I don't think it will really help either. You already have some white mixed in with those widgeon heads and especially the sprigs.

As listed above, I'd separate them a bit.