Hello Bennett and welcome to the community,
those are interesting thoughts! Thank you for sharing them!
Indeed, snapping of Walls to other objects e.g. Walls of allied players would be great.
This paragraph ignores the Team Bonuses, which would be strategically enhanced by your idea.
I think of it as a social problem that shouldn't be limited by technical solutions.
I like the idea of having the possibility to build only a small amount of buildings (quality or quantity) in allied territory.
To be honest, it would be easier to read, if you would use the 'Numbered list' function for numbered lists as well as paragraph spacing for new paragraphs. But that note from me should not influence my thoughts on your ideas.