NXT should be removed because it isn't traded on any of the main exchanges. If you check it on http://www.cryptocoincharts.info/ it isn't even listed.

NXT isn't on any exchange, it is only traded on it's own exchange which makes the price very easy to manipulate.

Personally I feel if a coin isn't traded on at least 2 decent exchanges then it shouldn't be listed on coinmarketcap. Price isn't real.

If you look at a coin like WDC it is listed on 6 exchanges at cryptocoincharts plus it is also on btc38.com so 7 exchanges.