If you had about 100 things wrong that you needed to fix, you would prioritize and work from #1 and keep going. File share must not be at the beginning of that list. I quit coding because of the amount of stress and how difficult it can be just to find the tiniest mistake that make everything fall apart. Just be patient and realistic.
Probably because 343 shipped an unfinished game, this isn’t the only feature that is unfinished or has been rushed and removed due to time constraints. No Campaign Theater, Proper ranking system being released months AFTER launch etc. I’m not a hater, just a massive Halo fan that feels has been hard done by Halo 4