Economies of scale and network effect stipulate that the growth of Maker ecosystem is mutually beneficial to all its participants. It improves liquidity and increases competitiveness by bringing more players. One of the measures of Maker growth is DAI supply, increasing of which can be achieved by increasing the user base, and one of the ways to increase the user base is to reduce major risks associated with lending and borrowing.
For both Dai and Vault users, one of the main risks today is the Base Rate / DSR risk and currently, there are several solutions coming to the market helping to redistribute this risk.
Once this risk is dealt with, other risk factors are Spread and RP.
It is possible to reduce such risk by entering into soft agreements with users offering predictable rates, and/or future guidance, and/or rules.
Of course, MakerDAO should be able to change interest rates to protect itself from risk. MakerDAO cannot be pinned to any parameters. If there are new risks MakerDAO must be able to respond to them. One example outcome is when Maker Governance lists possible situations in which the RP will be changed. Example rules could say that Maker will change the RP if:
The nature of the assets risk profile changes in a material way
There is new news regarding the asset
Maker suffers an unfavourable liquidation event with a related asset
The debt ceiling is raised
5… Etc… (could be a long list of other events)
That way Vault owners will understand that they are not being charged additional fees without proper justification and can better assess the risks on their own
I encourage Maker governance contributors to comment below on whether or not they would support such a proposal and if so what they would like the future guidance to look like. (i.e. what terms they would like to see)
Hopefully, this will eventually turn into a MIP13 Declaration of Intent MIP, where MakerDAO can signal its intent - offering predictability and fairness to users.
Disclosure: I am an owner of a company that helps Vault/Dai users hedge BaseRate/DSR.