thanks for chiming in! Looks like there is not a lot of traffic on these forums nowadays...
I only have an opinion about point 3.
First of all, it makes sense. An avatar is to a ship what a ship is to a pilot. An extension that they pilot. Ships are constructs and they do not know Athletics, which refer to humanoid-type mobility. Instead of needing to learn Athletics ("Manoeuvre" for people) in order to use an avatar, they use their Pilot skill, because that is what they do, they pilot it like they would pilot a vehicle.
I can see your point, but constructs usually do not have the Drive of Pilot skill, instead using their Manoeuvre skill to move (Drive and Pilot are character scale). So I could see the logic behind using Manoeuvre to "steer" an avatar as an extension, but this is not the way it is written in the rules.
I have absolutely no problem when an rpg system leaves some matters for the individual gm/group to decide, but IF you provide a rule for something, THEN this rule should better be plausible and consistent with other such rules. Sadly, there are several examples in the Mindjammer book where - to me at least - this design principle seems to be violated, which makes the game very hard to sell to my group. This is why I thought I'd ask here for an official clarification, as I might well be mistaken in my interpretations.