The concept of the Seagate Central is a good one. The hard disk behemoth wanted to develop a user-friendly NAS device, and to keep things manageable for less experienced end-users it kept features to a minimum. If all you want is to share files and be able to access them online and via mobile apps, then you don't need the vast range of features from a QNAP or Synology NAS device.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips