It will do that now, as it's not returning the Hive unless HBD price is above $1.
I don't think it needs to be more than that, as the more Hive/HBD the account accumulates, the more attractive it is to hack/steal. It isn't a trustless system until more is done on the consensus level.
Yea I was thinking some amounts bellow 100k or something ... to be able to push the market ....
You don't need anything like that to be able to push the HBD market. And as the DAO grows, we will probably have larger proposals for the stabilizer, reducing the need for a buffer.
I'd be in favour of a buffer if the system were more trustless. Otherwise a buffer = honeypot.