About #3, you wouldn't have missed much from the botting scenes. I was there right at the start. It wasn't until August of that year that the legendary items became more manageable.
3 months after release the AH system was very limited in capability. No time-sort, only 3-parameters (instead of 6), rare items are far and few and unmaneable (making buyers have second doubt). The only thing worth botting was jewelries in the begining. Also, HappyAuction was not bug free until September that year. It lacked a lot of capability when it first rolled out. Although I gotta admit HA auction in performance was vastly suprior to the most common form of AH-botting at the time (which was AutoIt custom scripts).
It was very exciting back then at the start.someone from ownedcore or BH posted a public autoit script, and then botting exploded. I'm sure there were other botters who stayed hidden before that public autoit script. That script (in my opinion) a biblical manuscipt for all of my early botting concept. In the end, AutoIt lacking OCR proved to be inferior to HA Memory reading.
There were those who profited a lot though during the first two three months of release. They had a focus narrow item and stick with the strategy.