Maybe it's a stupid idea and too early to consider, but if Ltc should continue to decline and it arrives to a point without hope of recovery, it could be possible to breath new life into it by migrating the whole coin over the Nxt's Monetary System. Please read:
https://bitcointalk.org/index.php?topic=896520.0The coin could be "imported" over the MS, with the current balances of its users, this way:
1. A future block is agreed upon to serve as point of reference
2. A trusted member uses the MS to create a coin named Litecoin with a number of currency units equal to those existing at the time of the reference block
3. A website is setup where Litecoin users can register a token proving ownership of a Litecoin address and their Nxt address
4. Users receive a number of new Litecoin equal to those in their balance at the time of the reference block
Or this could be done setting up a burning address, and you receive an amount equal to those burned.
The advantages are mainly a way to revive a dying coin and the fact that if the hashrate drops the coin is still secured by Nxt network.