We certainly have serious disagreement. However, I will only point out, that Sickles' original position barely stretched to the base of LRT, as I noted the hill itself was occupied., and, again, the position was not strong, even if III Corps were at full strength. As it was, as I noted, II Corps was stretched to the limit to reach LRT, with not ready reserves to meet any serious attack.
The important thing about the plateau on which the Peach Orchard rested, was how important was it to Lee? On military matter, especially tactical, I think Lee is very reliable as to what he thinks is important or not. I tend to refer to him.
One of my main points concerning the OP, is that we cannot know what or why anything could or would have happened, based upon conjectures of events that do not happen. But, I am sure there are just as many pros and cons of speculative scenarios, as there are for the events that did happen. Such speculations are useful as mental exercises, but, IMO, are sterile of any really useful historical content.