Depends on your usage and the visibility of the AOD whether you'll miss the NLED or not.
If I'm holding my phone or have my phone directly in front of me all of the time then the vibration and AOD will be fine. But if it's a distance away, e.g. when I'm cooking, then the NLED is perfect as it's much more visible and the different colours tell me whether it's important, e.g. green for SMS, WhatsApp etc, or if I can ignore for later, e.g. blue for Facebook.
It may seem like a minor issue but smartphones are all about convenience and NLED delivers this simply and cheaply. It's not a nice feeling when you shell out so much money for a new phone and yet feel a little disappointed that you've lost something useful.
I'll reserve judgement until I see it as I've never used a phone with an AOD but I'm pretty sure i'll wait to see what else comes along this year.