Cujo Of course. A fee for the bond-retirer could in principle be justified with higher liquidity of the treasury compared to the LPs, due to the fact that the majority of the on-chain carbon resides within the KlimaDAO treasury. This would be something like "the price" to buy assets from KlimaDAO. Whether 30% would be justified, is another question.
Perhaps part of the confusion regarding the backing could be resolved by looking at where the BCT in the LP come from. Were these BCT taken from the treasury, aka are there KLIMA tokens backed by them or were these BCT purchased without having gone through the Klima/bonding process? I'm not sure which one it is.
Also, how would the retirement bonds work if the "fee" was set to 0%, meaning that all KLIMA would be burned? Or if instead a fee (in the sense I imagined) for the bond-retirer of 3-5% would be introduced, that the DAO keeps? I'm sure these scenarios have been modeled, too, right? Are there any disadvantages?
Regarding my question about an audit: Are the retirement bonds using an existing functionality to remove assets from the treasury or is this a new one? For example, are they using the inverse bonds functionality? If new smart contracts are deployed, do you see an audit in order?