1) currently, when a new UFO is discovered (or when you click a UFO, for that matter), you get the "info window" with two buttons: "center on UFO - time=5s" and "cancel".
It might be nice to have a third button there: "intercept", which invokes the intercept screen.
It would be even nicer if the abovementioned "info window" would include "REGION=XYZ", because then you would know which base to start your interception from
2) currently, when you try to intercept a UFO and it disappears from radar, you get the options to either "return to base" or "go to last known UFO position".
Wouldn't it be nice to also have the option to "select new target" directly?
because sometimes (actually, most of the time) you will find yourself immediately selecting the same interceptor again and plotting a course to another waypoint, further along the UFO's direction of travel. a true "intercept course", heading for where you think the UFO will be, instead of where it was when you lost it. right?
3) currently, when manufacturing is finished, you get the pop-up and get one button that says "OK", which drops you back to the geoscape.
I think it would be nice to have a second button there "start manufacture" that gets you to the manufacturing screen immediately.
The same button as in the "research finished" window (if what you researched is an item that can be manufactured).