I think it's fair to honor the swap requests with no time limit, because besides
Cryptsy there are also others address who are not active for some time, but
that may eventually return.
Also in my opinion, it could demonstrate a commitment and sense of seriousness
in the Foundation, and show a continuity of NAV, which is itself a value.
No time limit makes no sense you cant expect the devs to keep the old chain around indefinatly that doesn't make sense.
The fact that the swap has no time limit, does not mean that the
blockchain should be kept alive at all costs.
Probably we can imagine different scenarios, and I have no idea
what will be done really, then the rest is just my hypothesis.
IMHO, the most important thing in making a swap and that the
applicant must prove, without a shadow of a doubt that:
A) an address is his property.
B) the extent to which it possessed in it.
C) the amount can not be swapped again, transferred to others
or sold elsewhere.
With the current automatic procedure implemented by the DevTeam,
virtually all the work is done by the wallet on the basis of the
blockchain rules in operation, as a normal transaction.
But now as hypothesis, we imagine that the blockchain is totally
blocked and frozen, forever.
With regard to point B, the amount of what is held can still be
checked on the data of blockchain last available block, or on the
basis of a specific block took as a reference, and this is a sure
fact and is verifiable.
With regard to demonstrate possession of an address, this can be
achieved by signing a message with that address.
Every old wallet or other tools, are in grade to verify if the signature
is genuine and it has been made with the key to that address.
Obviously, the same amount can not be transferred, or sold, as
it is impossible, there are no blocks that can distribute the new
transaction. With regard to manually swap twice the same address,
Well... this is at the attention DevTeam avoid it.
Surely it is a long manual process, awkward and complicated, that
would be worth to do only as a last resort, if and when the blockchain
is no longer able to function.
I do not remember the details, but it seems to me that in the
past swap from SummerCoin to NavajoCoin some addresses have been
carried out in a similar way, manually.
Excuse the length of reply, but it is an imaginary hypothesis, so it must
be described in general at least one bit.