Sorry, I do not share this view. I think the most important feature is that it works, i.e. performs its core function as digital money.
Asset Exchange is a confusing, niche feature, only used by a minority of users. It's inferior in performance and simplicity to centralized services.
I am not saying it has no merit, but in my opinion it's hardly a priority.
We need a coin that works first.
Well we definitely disagree then as people are screaming for decentralized exchanges so they no longer need to trust a third party web site.
Just offering "security", "speed" and "simplicity" is not bringing anything new to the table at all - it's basically one notch above saying "we have a great community".
There are already a ton of altcoins that can claim very fast processing times. As for the security and simplicity issues you brought up with NXT, those can certainly be addressed in the future. In fact, an article just came out discussing how pretty much any altcoin can be replaced by introducing "sidechains" onto Bitcoin itself:
http://www.cryptocoinsnews.com/news/adam-back-sidechains-can-replace-altcoins-bitcoin-2-0-platforms/2014/04/10
I fail to see how anyone would move over to an entirely new system just because it has some security enhancements and quicker processing, especially when there are alternatives that will offer these things PLUS built in exchanges that will allow for decentralization.