I couldn't agree more here that we will continue to see more projects vertically integrate. When (1) DeFi protocols are inherently undifferentiated (2) code is a commodity and (3) tokens/points can be used to acquire users, it is extremely difficult to cultivate a moat as a DeFi app. Vertical integration seems like a logical path as a means to raising switching costs. I see this trend manifesting in four primary ways:
Stablecoins integrating apps - Ethena would fit into this category. Maker launching Spark and other subDAOs would as well. I could see Tether or Circle launching their own payments apps in the near future.
Apps integrating stablecoins - Projects such as M^0 are making it easier for apps to spin up their own stablecoin. Given apps are really the "distributors" of stablecoins, I expect more apps to try to monetize this position by capturing their own stablecoin economics. Agora is also building toward this vision.
Wallets integrating DEXs - Given their proximity to the end user and privileged position as the "originator" of user order-flow, we are seeing more wallets vertically integrate by enshrining native DEXs at the wallet layer. MetaMask swaps already generates a meaningful amount of revenue. Wallet swappers tend to be more fee-agnostic.
DEXs integrating wallets - We are also seeing DEXs such as Uniswap try to get closer to the end user to front-run this trend by vertically integrating up the stack and building out their own wallet.
Ironically, this would imply that Frax was directionally correct in their vision this whole time, just never nailed timing and execution.
On your second question about projects/defi tokens with the most attractive valuations, I wrote a recent AF post on MakerDAO. Not only do I expect MKR's fundamentals to continue to improve but "Endgame" will likely be accompanied by numerous near-term catalysts. Give it a read :)