I'll join in this chorus, too. When you've got large stacks roading and railroading, this is what drives me nuts:
Right click.
Activate worker.
Build road.
Scroll right from the far side of the world.
Locate stack that I'm looking for.
Right click.
Activate worker.
Build road.
Scroll right from the far side of the world.
Locate stack . . .
I can't verify it at the moment, but I think a "fix" for this is: right-click the stack and fortify it. Scroll back to the stack and re-activate it. Now all the units in the stack become active one after the other. Also works for artillery/bombers.
Ok, here's one of my biggest blunders: I'm playing a 20K game in PTW, where MGLs can still rush Great Wonders. (In fact this was one of my GOTM submissions a while ago, trying to get the 20K Award.) Finally after a long time I get my first MGL and decide to turn it into an Army, so I can then build the Herioc Epic. There is this enemy town on the adjacent continent which is protected only by a warrior. I put a knight into my new Army, load it into a galley, load two more knights into a second galley and sail over to the other continent. The plan is to unload the units, load the other two knights into the Army next turn and then score the first Army victory to enable the Herioc Epic. The question now is: should I play it save and unload my units on a close by mountain where the Army would need an extra turn before it can strike at the warrior, or should I unload directly next to the town and be able to start HE one turn earlier? "Nah", I say to myself, "that town is miles away from their capital, only a warrior in there, nothing to fear...". You guess what happens next: it turns out there is an archer in that town in addition to the warrior. It attacks my stack of 3 knights, and of course the knight inside the Army gets selected as the target and dies!
When all I needed to do was either just unload my ships in save distance from the town, or, if I absolutely want to be one turn faster, just don't put that first knight into the Army yet! Then the archer could have chosen any of the 3 knights and my Army would still survive.
But the story doesn't end here... Later in the game I finally get my second MGL. This time I am careful and manage to get the long-awaited Army victory and finally start the HE. Still a bit later I get my 3rd MGL. It makes it home to the capital savely and waits outside for the current wonder to be completed. (It had only 3-4 turns left, so of course I don't waste an MGL on it.) Then the current project finishes, I start a new wonder, move my MGL into the city, press that button for rushing the project --- and a nice new Army happily waves at me with its flag!!


I had mixed up the two buttons and pressed the wrong one!
Now I had already 3 MGLs (normally I get only 1-2 per game, even if I'm militaristic and conquer the entire world), and still not rushed a single wonder...
Lanzelot