litecoin has quick transaction block times and miner payout times are quicker, low total circulating supply so price could see a huge gain still, and with the bitcoin fork eminent people will be switching over to alts, decred is also a great transaction coin so that could be another safe switch from bitc. Sia could solve huge problems that could take hours in minutes so it could be great for putting to use a lot of unused computer power, by allowing people to get paid by offering up their unused part for "rent" essentially, big companies who run through large coding and data would need this in the future. Just a few for example @vladmerge