I don't think Litecoin or any other Altcoin will replace Bitcoin , Bitcoin is still number one and follows by Ethereum and BCH , then maybe Litecoin.
If I have to compare the technology, community and application of Litecoin to the top cryptocurrencies (not top ranking by the marketcap), I never think Litecoin still has a high rank in this fight. Litecoin has lightning network. But is this technology better than the technology of Ripple, Stellar, NEO owned? No. 