The tax burden for staking rewards when they are claimed as income is pretty high. I think you could have a token that collects the baking rewards in its own pool and is backed by more and more XTZ as it gets rewards. Then the token holder could hold for a year or more to take advantage of long term capital gains. It also has the potential to eliminate a lot of the discrepancy between tax jurisdictions (your stake doesn’t get diluted relative to others just for living in a certain place). I think it should be simple enough to make and would provide immediate utility.
The token contract itself earns the rewards. The XTZ pool that the token is backed by will increase relative to the token amount. Then you could choose to sell the token or withdraw your share of XTZ from the pool.
I am not capable of making this myself but wanted to share the idea for those that might be.
Just a quick and dirty pic of how I think it could work