ROM For Improving Media Capabilities


I plan to throw out my old noisy HTPC and use my Galalaxy Note 10.1 (2014 edition) instead for local media storage to Xbone through DLNA. There are two problems with this as I see: 1. KitKat upgrade made local storage on SD card restricted and cumbersome 2. Torrent download speeds are about 1/5 on my android device compared to my windows PC.
I'm currently running stock 4.4 KitKat - Can a ROM with the correct configuration address both these issues ?