You're giving me some great ideas! I tossed this together last night when I realized what a bad a$$ this thing was turning into.
The hose is big enough at 7/16" (?) but the pluggage is where I have the piece of old racking can inserted into the hose. (Very top of the picture.) I think I'd have been okay if the hose were inserted into the pipe or better yet, as you suggest, straight through the stopper. I might even have been okay if it weren't for the 9 oz. of hops that were getting carried up on the krausen.
I like the thinking of running the hose fight into the jug. I'll have to get another stopper and cut a bigger hole in it. The jug is a half gallon Mason jar with my homemade plastic lid. Definitely needs improvement so thank you for the ideas!