My First Ever Bulk Storage System – What Can I Improve?

I'm a Builder – Not a Redstoner (yet)! Any advice on what I can change to improve this system?

I've learned a ton by attempting this project, and everything works well.

The item filter system is literally just 40ish hopper lock systems, and each lock only filters a single item. The overflow storage holds all items that pass through the system, and I store those manually in barrels.

I'm thinking of a shulker unloader in the near future.

Any tips?