Very interesting project, well done for the whitepaper 
I've read the whitepaper and I have a few questions:
In page 3 I was very puzzled about how the multisig configuration would work and I imagined something similar to what I found later in section 10. Maybe it's a good suggestion to add a reference to section 10 for the explanation
In the combination of multisig, how many keys are required to unlock the value sent? All the keys of the swarm plus Alice or Bob? Or is this an M-of-N configuration to prevent missing nodes?
Are all the required keys in one swarm/group sent to another swarm/group as backup before being sent to the users?
I understand one user creates an address to send and the other user constructs the private key to access the funds on that address
Which keys (public/private from who Alice/Bob) are signing on each part of the transaction? The steps in the graph confused me a little bit although I like the actual graph, kudos for it.
In page 5:
There is a mention to an image that is missing in that page. I imagine this refers to the image that appears at the top of page 4, is this correct?
Who creates the hybrid asset and why should I care about a specific asset or trust the issuer compared to another one? Is there any reputation system?
Who and how we set the exchange price of the hybrid asset among chains?
This is the part that I can't completely click in my head: if, for example, I create asset X in Counterparty for the value of 1 BTC and the same asset in NXT for the value of 1 BTC and tomorrow the price of NXT duplicates, then the value of my hybrid asset X in NXT is twice more valuable than my asset X in Counterparty. How do I sell/buy these assets to other people interested in buying the appreciated NXT?
Legal disclosure
I'm not responsible for any mental harm caused to any human or animal produced while reading any of my possibly stupid questions.
I've read the whitepaper and I have a few questions:
In page 3 I was very puzzled about how the multisig configuration would work and I imagined something similar to what I found later in section 10. Maybe it's a good suggestion to add a reference to section 10 for the explanation
In the combination of multisig, how many keys are required to unlock the value sent? All the keys of the swarm plus Alice or Bob? Or is this an M-of-N configuration to prevent missing nodes?
Are all the required keys in one swarm/group sent to another swarm/group as backup before being sent to the users?
I understand one user creates an address to send and the other user constructs the private key to access the funds on that address
Which keys (public/private from who Alice/Bob) are signing on each part of the transaction? The steps in the graph confused me a little bit although I like the actual graph, kudos for it.
In page 5:
There is a mention to an image that is missing in that page. I imagine this refers to the image that appears at the top of page 4, is this correct?
Who creates the hybrid asset and why should I care about a specific asset or trust the issuer compared to another one? Is there any reputation system?
Who and how we set the exchange price of the hybrid asset among chains?
This is the part that I can't completely click in my head: if, for example, I create asset X in Counterparty for the value of 1 BTC and the same asset in NXT for the value of 1 BTC and tomorrow the price of NXT duplicates, then the value of my hybrid asset X in NXT is twice more valuable than my asset X in Counterparty. How do I sell/buy these assets to other people interested in buying the appreciated NXT?
Legal disclosure
I'm not responsible for any mental harm caused to any human or animal produced while reading any of my possibly stupid questions.
Thanks! Mental harm? Au contraire, thank you for this useful input. The multisig protocol is worked out pretty well in an appendix/protocol paper that we are planning to publish somewhere the coming days.
I need to sleep now
but we will try to answers your other questions tomorrow!