I see numerous new ICO's and existing projects that claim to be blockchain 3.0 etc.
However which one do we think will be the leader in 2018?

I think the real question here is will NEO let the government have some influence over them? Anything in competition to the countries vision can be taken down easily however it also means that if accepted will only ever succeed.

I believe in NEO, however, I don't think it is an Ether killer, I think that it will shoot up like ETH but be used predominantly by the Chinese. Knowing the culture if it truly takes off then there is nothing locally that can stop it.

I think this is a great project which can only go up!
If they hit other exchanges the price will go up.
When they release their developments soon it will go up.
When they get partnerships it will skyrocket!
Now is the time to buy whilst the price is low.

I think XP is just waiting to shoot up,
XLM has partnered with IBM which has WATSON and many links with industry so I would expect this to forced past other similar coins like XRB.
Also NEO for the Asian market boost and TRX for the hype

I wouldn't say Litecoin is dying. Compared to ETH its certainly having a difficult time now but I think it is good for at least a few years - especially as more users join exchanges such as Coinbase. Litecoin is a 'stable' (and therefore less risky) coin when compared to other altcoins which both go up and down more many % higher. It's not so much its value - its the percentage changes that we need to look at.