Maybe new room for Willy?
Wow, dream big or go home. I love it!Here's what I would love to see happen.
Upon completing the Fish Tank Bundle, junimos will repair Willy's boat (the current reward - the copper pan - becomes a heart event for Willy). Willy will then let us charter deep sea fishing expeditions (allowing us to invite a friend or a date, as is the case with the movie theater), or schedule trips to a new island location. The island is populated with a handful of new NPCs (perhaps even a new bachelor and bachelorette), new fish, new forageables, and new tropical crops (banana tree saplings, pineapple seeds, plumeria flowers, etc).
And all of this will be supplemented by a new beach farm...a new farm that sacrifices crop space for access to a small beach where palm trees can be planted, beach forageables can be found, and saltwater fish can be caught.