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Responding to point 2: The purpose of this proposal is to add BAL and AURA to a strategic asset whitelist, which doesn't make it strictly an "investment" (in the sense that it should/will increase in value). Per OIP-51, which introduced the strategic asset whitelist, the whitelist will consist of assets that "help Olympus strengthen its prevalence throughout DeFi [… The assets allow] Olympus to significantly increase our passive revenue generation, acquire governance power and increase the diversification of treasury assets."
Both veBAL and vlAURA, which are the two assets this proposal pertains to, are fee-generating and allow Olympus to direct and influence BAL incentives and Balancer governance at a large scale. Seeing this is Olympus' choice of DEX as per OIP-103, it is easy to argue that Olympus should itself grow its influence on the venue which it hosts a "majority of Olympus’ Protocol Owned Liquidity in an OHM-DAI-ETH pool" or else it won't be able to cast votes that represent the DAO's best interests.
Per OIP-51:
"Strategic investments will only be used to purchase what we call utility assets. These are assets that we intend to keep as long as they help Olympus by providing:
Additional partnerships opportunities
Increased influence on liquidity direction
Governance power in key protocols
Better yield opportunities for our Reserve assets
Diversification in market value of treasury."
veBAL and vlAURA accomplish almost all points in the list shared above.