WBTC's (and others) pricing mechanism on Aave

[bgdlabs]

Thanks for the feedback from Gauntlet @Pauljlei

@Pauljlei

We are already using WBTC liquidity for our risk parameter recommendations. So we do consider WBTC as an asset of its own, and as such we recommend changing the oracle to match. Of course, WBTC liquidity conditions (and thus the Value at Risk) can change drastically very quickly in the event of a WBTC/BTC depeg.

This is an extremely important aspect, and we agree it probably encourages swapping to price based on WBTC, instead of BTC; or at least it reduces the market-risk of doing a swap.

We would like to know the opinion too of Chaos Labs, the other active risk contributor. cc @omergoldberg

In parallel, could be really useful if Gauntlet & Chaos Labs do a networks/pool-wide analysis of assets of similar nature. For example, BTC.b is in a similar situation, but in that case way more supporting on using BTC, given the size of BTC.b itself (still, open for constructive discussion).