Question/idea What are you doing with the remaining coins that weren't swapped ?
The swap is not finished. There are some people with the old coins who missed the process, they can still swap them. The last one was last week with 1 coin (tx id: 33cda966a96e059d76aa79d51c7f3157e861e3142b9705c0cbc77907b6944943).
You could add AuxPOW then write a script that sends one transaction with 0.000042 POW mining fee every block with the remaining 42 coins. It'll entice miners with the fee and make the remaining distribution of the coins fair.
Will it be fair to people like pirroniky:
pirronik3000 address is 4SmFFXyW9iFFuyJ4LsxmAvdyeqqe7bGVeh i've sent 0.44 old 42 coin
What will happen when these coins run out? How will the network work? Will the miners drop these coins on exchange or will support the network by staking? Will they donate to development, to order a new exchange, etc..?
The current situation is that only 15% of all holders take a part in PoS generation (~90% by 4VsEs7wqRpoiTpmqViWRtse1P3CNgvBw4g) and less than 5% support the network by PoW mining...