I think the rev share model is a nice suggestion, however I’m sceptical if it adds any fundamental value to the DAO.
Already today, all revenue is captured by token holders as the entire treasury is subject to COW governance. Building a staking product would create additional friction imo (not all token holders will stake) and is structurally very similar to paying a dividend. Note that CoW DAO is already buying back CoW from the market using part of its revenue so the effect on value creation should be comparable (cf. Dividend vs. Buyback: What's the Difference?).
I do agree though that doing something actively with your tokens (putting them somewhere to see number go up) might have a positive effect on perceived token utility.
Traditionally, I think early state tech projects tend to be careful about paying dividends and rather build a war chest and re-invest their revenue into growth. I share @marshy’s concerns about being mindful of the ongoing expenses the development and competition incur. We are still at the very beginning of what this DAO can do and while it’s great that we are able to demonstrate the value the CoW product suite is adding, we should be thinking primarily about growing the pie not splitting it up.