What's the point of adding Segwit and LN to another altcoin, when they can simply create a new coin having the best of everything on board already? If you purely look at Litecoin and the technological aspect, then even Litecoin could be seen as "outdated". Don't forget that the majority of the circulating Litecoins are in the hands of just a few players. Far worse than is the case with Bitcoin's level of wealth distribution. Also don't forget that nothing happens without a selfish thought where people are looking to gain a massive benefit from each and every situation.