No it's not. DigitalCoin and Nibble used a better approach.

WorldCoin. It was hyped up massively by a lot of members here and now it's trading below YAC...

elacoin, FC2, etc were basically DOA so not counting those.

This is good, this one reduced largely the instamine. 

Zero. It has been done already.

Just mine YAC after August 13. It seems GPUs stop working at all after that date.

See: https://bitcointalk.org/index.php?topic=206577.msg2237077#msg2237077

sure it will, how many u have  

Wrong i sold ela coin, no problem...
for me biggest fail is sunrise coin, have ~5K if anyone wants

All you need to do is check if GetBlockValue says it's a superblock, and if it isn't just skip mining it.

Then you run the LKY wallet with higher process priority than some other wallet and mine happily other coins unless there's a superblock available. You get a wonderful profitability while everyone else is down in the coal mines burning watts.

want to buy 2K at 12LTC/K

I am assuming by now someone has broken the 'model' and is mining only 'mega blocks'. Solid design