Not sure if you’re familiar with Pendle and other fixed yield protocols but:
Pendle takes a yield bearing token and splits it into a YT and OT token. OT gets the ownership of the underlying yield bearing asset, YT gets the only the yield. For example, you could split aUSDC into OT-aUSDC-Dec22 and YT-aUSDC-Dec22. The OT token is redeemable for aUSDC at expiry (Dec '22) and the YT token gets all the loan interest until expiry.
In this calculation I focused on the YT, this implied yield is mainly a metric to gauge market sentiment on yields. But you can also calculate it based on the OT token - which is akin to the return offered on a bond. Arbitragers should make the YT implied yield close to the OT implied yield though.
From Pendle docs:
Implied yield is the annual yield on the underlying asset that the market is implying by the current price of YT. Implied yield allows for quick comparisons of the value of YT against the current yield of the underlying.
I think it could be a cool dashboard though because implied yield can be compared across fixed yield / yield trading protocols. There are quite a few of these now.