I use My Movies on my old server with WHS 2011. For playback I use Dune HD Max and iPad/iPhone app for control.

I don't know if can do everything you want, but most if I think. More info can be found here: https://www.mymovies.dk

Playback in iPad/iPhone app is possible, but no app for ATV. You can still use Infuse in ATV to stream from your server. My Movies can create metadata for many different players,

My Movies is not free, but compared to Kaleidescape... I think My Movies still have a very nice user interface and with IMDb integrated you can read about actors etc.

Regards, Erik
Meridian G68ADV, HD621 and vMSR
Dune HD Max, SB Touch, VU+ Duo2, Sony CDP-X303ES, Denon DP-59L, Goldring 1042, Harmony Design V9
Advantage P1, Anthem MCA 3, Dynamic Precision PA4000H, NUC HTPC, ATV 4K
Revel Performa3 F208 and C208, Mirage OM-R2, IB sub 2x18"
Sony VPL-VW95ES, Lumagen Mini3D, Stewart ST130G3 2.35:1 116"