I would love to have HBD interest and have witnesses actually using their parameters again. That's something I've called for many times in the past to no avail. And then I realized that many of our witnesses aren't that versed in economics/finance anyway, so it might be better that they didn't use the parameters. (That's also one of the reasons why I have continually called for new/better witnesses to fill the most important slots.)
In the past, one of the arguments made for not paying interest was that exchanges were the largest holders of tokens and the rewards would be going to them. But many exchanges now have the ability to stake with them, especially with DeFi tokens, so in my opinion, this is something that could encourage more holding and spark new/more interest in HBDs and the Hive chain.
Why not give it a shot?