I would really like to see a much more added on science structure, not just more that you can unlock, but having the ability to spend lots of science points on upgrading specific parts to be more efficient etc, would be great as a way to extend the current maxed out of science situation.
Even if there is only 1 upgrade for each part, but cost thousands of science points to get, it would make collecting science more important post unlocking everything.
Also being able to collect really small amounts of science from drilling resources would be cool.