What watch features do you want to see become more mainstream?

I recently picked up a watch with 2 sets of spring bar holes in the lugs. The point of this is to be able to accommodate straps of different thicknesses. I had never seen this on a watch before but now I'm wondering why more brands don't do this. I hope to see it become more common in the future. 

What are some not-quite-mainstream features you'd like to see become more common?

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Never seen this before. Interesting idea.