It'd be cool to see hatmod become default like that. But first id like to see some kind of interface like what Rusty and Monk's Hatmod+ had, along with the inclusion of superhat. Basically, some way to see hats on your avatar/an avatar so you could try on hats.
Also, Id personally want to go back and make sure that my hats can be worn together without awkward overlapping within reason. That, and scrub up some of the hatmod models to be a bit more sightly when viewed off the blockhead. There's still quite a bit of work to be done.
However, I will say that with the release of superhat, I'm realizing that there aren't many hats that work as a third hat. I might need to make a 5th pack.