My (following) comments on the map should probably be taken with a grain of salt, given that I didn't play/scrim it for any longer than the week it was in rotation.
Regarding mid, I think one reason it is so soldier-centric is the easy splash spots, in particular near the enemies' right-side door. The area from which soldiers can potentially bomb is a huge width to watch, compared to most other midfights, which is also probably significant.
Another thing I notice is the ridiculously long spam lanes, especially between last and 2nd but also between mid and 2nd. Too easy to hit damage at chokepoints without exposing yourself to harm.
At the last point, if you decide to use your proposed change of closing off that opening, rather than removing the boxes beside the point I'd suggest moving them a couple playerwidths away from the spawn, so that there is still a gap on that side and still a barrier, but neither is as, shallwesay, "prominent." I would also favour opening up the area behind the point, some of those little walls seem unnecessary and obstrusive.
Anyway, overall a nice looking and unique map. I had fun playing it for the one week my team was willing to. Please don't change the tileset/visual style, I like it how it is.