- paper wallets
- reduced/zero/negative trading fees for market makers in exchanges
- whether it makes sense to buy boolberry as a hedge or not
Thank you in advance
On the latter, as the resident fan of both XMR and BBR (but with more of a financial interest in BBR, full disclosure):
BBR is a good hedge against XMR in isolation, because it's the only other non-BCN cryptonote with an independent and active developer. There are not a lot of developers in general out there yet who are capable of fixing bugs and improving upon the Bytecoin source. Hopefully, with some success, that will change, but for now, the XMR and BBR teams are the only serious games in town. It also has some advantages as a hedge in the way it's departing from BCN/XMR in its blockchain management -- *if* blockchain size becomes one of the biggest limiting factors (unknown, and betting against moore's law has not been a historically great idea), for example, it has a head start.
But, of course, BBR is a poor hedge against risks from outside the cryptonote family, such as one of the bitcoin carbon-copies actually managing a strong anonymity solution in a way that can easily integrate to the existing bitcoin ecosystem. While I don't think it's likely in the short term (the existing mixer solutions are relatively poor compared to the CN ring signature mixins), such an event would hurt both XMR and BBR.
So, as with all hedges -- it depends what you're hedging against.
(Re #2: HitBTC offers market maker contracts with fee redemptions and cash incentives for maintaing particular spreads, but I don't know of other markets that do this.)