I believe you mean to reference IIP-13 and you do make an interesting point.
If this were somehow possible, I could disincentivize people from ever redeeming the NFTs for the underlying staked assets. However, my thinking is that we are most likely to see the reverse (esp in the short term). Here’s what I mean.
Imagine a DeFi lending protocol analogous to Maker; that allows you to borrow stable coins against said NFTs. If the value of the collateral falls below the liquidation ratio, the collateral is auctioned off to regain collateralization ratio, but unlike coins and tokens that can be liquidated in parts. NFTs would most likely be liquidated completely. This shows that in many cases these NFTs would be valued below the actually worth of staked IoTeX mostly because they are way less liquid.