what was your reasoning behind making every single Jedi Knight robe hooded?

We need an A Tab, or they should go back to the idea of having all bits of armour interchangeable.
Not sure why that was removed

Yup.

Also there is another thing. Remember when they were "threatening" to make all the gear very class-strict so they can be easily recognised from afar...? I can't say anymore if that guy in the robe is a smuggler, trooper or a Jedi if he doesn't have his lightsaber on or I actually read what class he is after I atrget him.

But that's off-top. I want to know "why hoods".

Isn't there a class icon above everyone's name or something...

I honestly believe this has to do with the toggle hood option.

I am almost certain I have heard the devs respond about a hood option with "it is being worked on" and "no known ETA, yet"

I would only assume that if Bioware intends on giving a hood toggle option, then they are not making hood down or hood up versions of gear because this problem will be fixed when the toggle is available.

Also, consider this: suppose they released hood down versions of armor already available ingame on the cartel market and a week after you spent RL credits to buy that item, the toggle became available. This would cause issues.

This is all a theory but I find it make sense and a bit more plausible.