I think one thing that would help keep rounds interesting for people who play a lot of engineering (such as myself) would be additional station goals, while the three we have are quite enjoyable they tend to get repetitive after you've done each two or 3 times. As such adding a few extra goals could be interesting. Some suggestions for goals which could be implemented using existing mechanics would be:
Constructing a supermatter/thermoelectric engine, and adding it to the grid.
A going green goal where the singulo and tesla being built causes the goal to fail. Would give engineering the task of upgrading solars in order to meet demand or using a tertiary engine source like the turbine.
Renovate mining station, adding an autolathe, protolathe, cloning bay and cryotube.
Renovate con site, have X rooms with a breathable atmosphere, charged apc, fire alarm, intercom, camera, etc. Could also add goals of having a functioning set of lathes, cloning pods, ai, etc, on the site.
Anyone who has any other suggestions feel free to add them to the thread.
Also worth mentioning these are entirely engineering focused goals, it would be nice to see other departments getting goals such as cargo, botany and specific science departments like xenobio and toxins.