Basically what Semi Evil Ryu said. The stream schedule was made after registration closed and priority was given to the games that had the most entrants. We managed to fit in some extra stream time during pool play on Friday night, I believe, while the 3rd Strike Online Top 8 was delayed.
There were two main reasons why we didn't go for a third MK-only stream, and neither was limited bandwidth (we know Medina has 4G). One was physical space limitations. The MK stations were already right up against the side stage and seating area and squeezing in a spot for commentators would have been unfeasible. The other reason was that we didn't want to split viewership between three streams, as we were already splitting it between two.
Also, in retrospect, even if we had let Medina stream using 4G (and if he were there the first two days), it was so difficult to get a solid signal at the venue that a stream would've been incredibly hard to pull off.