Personally, I don't tweak a setup unless the animal gives me a reason to do so. If your snake is eating everyweek, doing the necessary and shedding well then I see no reason to change your set up.
I'm ok with snakes using the hide like yours is in the picture; I've had similar situations where I offer a bigger hide only to go back to what I thought was "cramped" aka the hermit crab bp. Your snakes behavior is the best indicator on what it needs and it seems that you are in tune with it.
I would leave everything as is until I had a reason to start tweaking. If you did want to add a bigger hide you could place it over the warm side and replace the cool side hide with some fake foliage. This will offer the snake some security without the rigid space requirements of a second hide.
That looks like the chunky butt of a healthy snake; keep doing what you're doing.