by Steeleback
I agree with most of the factions you listed as the ones where an Academy opening might be worth pursuing. The one exception being Taklons.For Taklons I would be more interested into putting out buildings on the board for future leech than to spend my early resources building up. Often a power leech of 2 will also be sufficient for them so I would rather have 2 research labs than 1 Academy.
On the other hand I would like to add Ambas to your list. As they start with an additional ore income they could benefit more from a first round Academy and either have easy expansion with lvl 4 navigation or take lvl 2 Nav and 2 steps somewhere else. They do not need to have their PI into play early anyways.