In that case, that makes a lot of sense. I haven't built the Master Grade version yet, but I've seen Bandai taking a lot from their learnings on 1/100 kits and applying them to 1/144 scale kits. A great example of this is the torso support they added to the RG Tallgeese.
Made a post about a neat little High Grade kit!
I think the shoulder tab/was a deliberate design. They probably learned from the shortcomings of the MG
In that case, that makes a lot of sense. I haven't built the Master Grade version yet, but I've seen Bandai taking a lot from their learnings on 1/100 kits and applying them to 1/144 scale kits. A great example of this is the torso support they added to the RG Tallgeese.