The goal here is to create a production advantage for specialization, without changing new player gameplay.
The idea would be to have global experts which improves efficiency of a given industry type across all of your bases. However, these experts would be less powerful on pioneers and more powerful on scientists.
While experts work well when you have a single base, when you have multiple bases, you can specialize your experts across planets, which allows you to get the best efficiency bonuses while also reducing market risk. This leads to vertical integration across bases as the optimal pattern.
With global experts, it would become more profitable to run multiple bases of the same industry. The dynamics at play during new player phase where you have a single base and do a lot of trading would expand to late game. Just like you can do everything in your first base, that’s not as efficient as stacking experts and trading.
By having these global experts not affect pioneers as much, new players do not have a big disadvantage.
For example, 1 expert could increase pioneer by 1%, technicians by 5% and scientists by 15% with scaling like base experts. You would want to run full experts for scientist buildings and since you’re running them, you might as well switch to that type for mid tier planets. The minimal impact on lower tier still allows vertical integration to secure your lower tier products. You could still be self sufficient, but it wouldn’t be as good and might require a corp.
Ideally, there would also be higher tier buildings for all industries otherwise it will only work for manufacturing, chemistry and electronics.