Expositions are only required for Part 142 organisations. They are similar to manuals required in many other industries, not exclusive to aviation.
The point I'm trying to make is that what you are proposing is pretty much what already exists in Part 141, including the ability to train at remote bases. Part 141 is not onerous and has cost me nothing.
Training in remote areas has challenges such as finding an instructor willing to go there, having enough students to make it cost effective, fuel, maintenance, the cost of getting an examiner up there etc. But there is nothing under Part 141 preventing people from doing this if they wish to.
Could you or someone else involved with this proposal answer the following questions:
What is the definition of an "independent instructor" and why can they not operate under an existing Part 141 arrangement?
Where and who are the people who are currently being prevented from teaching and learning that need this change?
How many Australian flying schools did AOPA consult before coming up with this proposal and where are the responses published?
Where is the market research that quantifies how this will revitalise GA?