I feel a little dirty saying this but Watson I actually agree with MOST of your reasoning when including Barnes, especially point number 3
Personally I would still include Marshall or I would even go for Ambrose over Lillee but yeah solid ATG team.
Monk, why Greenidge? What did Hutton, Sutcliffe, Gavaskar or someone like Hayden or Sehwag* not do well enough to be picked.
What do future world openers have to do to knock out GG?
* I rank Greenidge higher than the two but wanted to include a few attacking openers who average more.