If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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These are good points I'm glad you posted it, it's interesting to see the work flow of someone else.
We apparently have very different philosophies when it comes to SRS, you seem to be more of a 'quality over quantity' person. Where as I find that the biggest barrier to me using SRS at all is entry, and so all of the disadvantages you've mentioned still don't outweigh the advantage of speed for me of using images. I prefer to err on the side of adding too many cards too quickly and just deleting as I go if I find they're trivial.
Just as a side note: notational changes have never been a problem for me as long as I ask the question in the notation of the answer.
How many cards do you have in your deck and for how long do you use it?