The problem with your example is that you don't even cover the main points I was making in Improved Farming with your "four basic points", as the most important aspects were the automation to prevent micromanagement, the conservation of mass and need to maintain a cycle of nutrients through the ecosystem in order to limit how many resources a player can pull from organic resources, the introduction of pests to force dynamic player reactions, and uses of farming as an umbrella system to pull all "organic resources" into a single giant system.
Further, a large portion of my thread was the argument for these elements, preserving the arguments that had been made against them, and the reasoning for how the systems I was proposing were counter-arguments against those arguments against Improved Farming. Stirpping the suggestions of their context and simply throwing out bullet points would have made the suggestion thread a pointless series of bullet points listing statements without meaning.
Furthermore, I did a significant degree of research, and shared the results in that thread. One of the best assets we, as players and suggesters can bring to the table when we suggest things to Toady is bring expertise or research in topics Toady had no experience in. Arguing that we shouldn't bother with this benefit to Toady because it's tl;dr for some forum members is just counter-productive.
If I had split up the thread, it would have had no meaning and none of the organization that the thread was created to have.
I'd wind up simply flooding the Suggestions Forum with useless suggestions that would have had no value on their own, and didn't deserve their own suggestion threads... like, say, this one, or some of the other recent suggestion threads, yours included, which are either restatements of things other people have already suggested, or would be better suited to being expansions of existing threads.
While I'm sorry that you don't have the interest to read that thread, (I even added a TL;DR version and a link to the pretty pictures for those who wanted the short points, you know...) arguing that we should have shallower and less thought-out suggestions is simply not the right path.