Here is our reply as a Naim dealer in regards to Raindogs experience maybe this would be helpful.
Naim's service and support is routinely excellent but as with Naim and many other companies Kef is a good example, with their LS 50 wireless, products are realeased on the market with a rudimentary feature set or with software platforms missing with the expectation that the features or platforms which are missing will be addressed shortly after launch.
Most companies write their applications for IOS first, why the IOS world takes in to consideration the crazy amount of Apple I phone users, but what you may be missing, is the fact that most tech savy users, have an Ipad, and even if you are an Android user, I prefer my Samsung Note 8 over the Apple Phone world, most techies have an Ipad.
So if you write for IOS first you are going to take care of a lot of users
Most Core users are going to load their music and will be searching by Artist first then album and then possibly Genre.
I can't tell you how many of our clients open the app and scroll through cover images first long before they do any other types of searches on these kinds of devices.
Naim routinely updates both their software and firmware and usually if a feature is missing it will be added with the next software update.
In the cases where uploading music misses tagging info sometimes that is the reason that you don't get an appropriate genre match.
The Core sounds amazing and for the gentleman who thinks a Mac mini can compare sonically it doesn't we have tested Aurender and many of our specialty servers vs tweeked up Mac Minis and sonically the servers are usually far better sounding.
So unfortuantely for Raindog I think he got slammed by being an early adopter. The Core is excellent and Naim's products routinely rock!
Dave and Troy
Audio Doctor NJ