I have a Mac mini 2012 (2.5Ghz i5, 4GB RAM) which I use exclusively as a music server (iTunes w/ iOS Remote app). I have 10.10.5 Yosemite on it now. Updating has not been a priority and just assumed it wold run better on the older OS anyway. Now with 10.12 High Sierra on the horizon it's now or never to update to Sierra. I'm just concerned about losing compatibility the way Apple dumps support for features even for still supported devices. Since I only have 4GB RAM I'm not sure I want to jump all the way to 10.13. Opinions?