For me, the developers put the kiss of death on NXT by coming out and saying that they will only support it for a year, or so. Not exactly welcome news. This is a shame since I was starting to get used to the exchange within a wallet features.
I think a lot of people cashed out on the Ardor freebie and that has affected the price. I expect it will rise as more details come out about the Ardor project and wallets become available.
The exchange within a wallet should be inside Ignis too. It's still too far away, there is a chance devs don't succeed developing Ardor, then we're back to Nxt 1.0.