Not a big fan of this. Having DAI as collateral for DOLA makes DOLA backed by DAI underlying and thus RWA (USDC namely and the other RWA backing DAI which are the majority now).
One of the value propositions of DOLA for me is that it could be a truly decentralized stablecoin backed mainly by decentralized assets (This is of course not the case now with the AMM fed actually backing DOLA with USDC but this could be mitigated with a new solution later and if FIRM where to compose the bulk of DOLA backing at some point).
The analysis of the DAI backing seems light in the risk report of DAI.
I guess it this brings a lot of value for DOLA for a low integration effort it could be worth it, but the long-term goal of inverse should not be to have its stablecoin primarily backed by other stable and/or RWA.