Just to put things into perspective. A goal of any of our HBR is to follow the rules to the maximum extent possible, and get the necessary intent with the fewest changes possible.
Our A-T Ditch rule with respect to the previous posts does this and fixes some perceived 'issues'. So one can move into a Trench hex, Foxhole, A-T Ditch hex without entering the Fortification. No need to change that. The fixed things dealt with Bypass and Infantry simply walking over an A-T Ditch. The only complaint could be that it costs 2 MF + COT to leave an A-T Ditch hex no matter what. But this is simply, consistent with other rules, etc.
I could reword some things as part of a rewrite, but I think this part of the HBR is good, easy to understand, meets the intent, etc, so no change is necessary unless someone brings a huge issue to me.
Of course I am willing to take into account any feedback, but the main intent of my query is in the title, A-T Breach.
The reason is more than one way to create the Breach, and want all of the rules to line up for both infantry and vehicles to go through the breach. I still have analysis to do. As is current Vehicles move through as if it were a Gully but at Base Level. I could change to something more like Trail Break at Base Level, 1/2 (or other) MP, etc.