Echelon, as a whole map, feels more balanced than Overgrowth. Even the “backdoor” spots are positioned in such a way to be more visible to players and the sentry. The possible angles of attack, while more accessible, are much more condensed in Echelon than they are in Overgrowth.
The backdoor spot in Overgrowth is hard to see into and even more difficult for the sentry to defend itself against because the geography of the spot provides excellent cover. It’s more removed from where the mid struggle is and you can’t even loop around easily to sandwich them between you and the sentry like you can in Echelon.
I also might be a little bitter because I feel like I’ve experienced more than my fair share of exceptionally persistent Benedicts/ISICS just unendingly flying/jumping into that spot to be extremely tacky PITAs. To the point where I feel like I can’t leave the sentry zone because I can’t rely on my pubbie team to pay enough attention.
That being said, I had one bizarre Echelon match where half the opposing team bum rushed the sentry right out of the gate and put a significant dent in it. Like before their first minion wave even had a chance to biff it on the bridge. The sentry does a hilariously bad job of defending itself. It should definitely have more attack options or better target priority for dealing with enemy Battleborn.
I think a lot of the butt chafe about backdooring would go away if the audio cues for the sentry being under attack fired correctly. Just saying.