xX-Angel In Your Eyes-Xx
I heartily approve of adding orbs for this purpose, will slow down the speed at which people race through the game. As annoying as it can be though, having the incentive to crew is, in my opinion, good overall since it promotes team playing. Considering the game is intended to be unsoloable for the average player, particularly at the end, this would lead to even worse crew skills. Basically, my point simply is that the g'hi system should be updated, not replaced with this idea completely.
Here is the thing, any kind of coercion, passive or not, isn't going to make good crew members. As it stands, ghi just rewards you for having warm bodies.
Here is the other thing, this system puts it on the player to learn. They make decisions that affect their growth directly. They have to learn how to manage their orbs for their best success for what works for them. A number of games successfully encourage social playing without gimp measures to shame the player with lack of personal power if they don't have enough warm bodies in their crew.
I love crewing, I love having people to back me up. That is a personal preference though. I choose to get together with my friends but when I can't find enough friends or don't deal with idiots, I am shamed by the game via the Ghi system telling me that I am nowhere as good as I am with five other people. That is ******** annoying. Let alone having to watch that damn Ghi meter bleed away as I get away from Barton. Hell, you lose 1 Ghi almost before you reach that VG Null from Barton.
Besides, as you stated, my idea would slow leveling thus taking longer to move along thus adding time to the experience. Wisdom does come with age, after all.