I'm not sure I see the point. Sure, we may get some new fans (Litecoin users), but wouldn't this just make competition for BitsharesX, and give Litecoin users a half stake in that competition for doing absolutely nothing? I don't think it would be fair to snapshot participants, or even people whom have bought since then.
Forking BitsharesX at this point before the user base is mature seems like shooting yourself in the foot, and would reduce liquidity on both centralized exchanges and in the bitasset marketplace.
On top of that, all of the Litecoin users could just dump on the market and it would be a risky investment for anyone that isn't a AGS/Protoshare/Litecoin investor. As it is now with BitsharesX, everyone has invested something to get their stake. Whether it be investing BTC/PTS in AGS, providing CPU processing power for (or investing in) PTS, or purchasing their BTSX on the free market, this all provides incentive for people not to dump BTSX on the market for less than what they put in and upholds the price. If you make a fork and give 50% of the money supply away for free, this incentive would not be as strong for the 50% who got it for free.
BitsharesX is too small right now to try to fork the the community IMO.