Starting any related write-up without considering how much Monero Core did for this project makes no sense. Not just stewards, but role-models, crypto heroes and people who devoted their time, expe...

Collateral wallet is 2-3 multi-signature wallet but it doesn’t have to be Monero. Bitcoin multi-signature is much more tested and very ease to use using Electrum or similar.

Option two on this topic would be to use Monero multi-signature to keep Collateral.