Ignoring the bad grammar within a number of the mega events there is a flaw (or perhaps a bug) with one of them. Assassination The flaw (or is it a bug?) is that a race you have no diplomatic contact with declares war on you. Even with this event there is no diplomatic contact established so no diplomacy can be
Glacier1701
I'll agree with the fact that if you miss that a constructor has made it to a starbase you don't know until you've checked all bases. A base which has an upgrade available should perhaps behighlighted somehow - blink? - so that you can see something needs to be done. And would also be nice to recover a constructor if you need it elsewhere or made a mistake in sending it to that base.
As the name implies a starbase that has usuable constructors docked with it should be highlited so that you can build modules. Easy to miss when a constructor reaches its destination especially if you are focused on another area altogether.
A video you might want to watch (not totally 100% accurate even though recent but close enough): [video]http://youtu.be/eNpiRFP7T2c[/video]