Having played the demo for quite a while now and having sampled some of the mods I have a few issues that are driving me nuts too.

The use of the right mouse button . I am not skilled at double-clicking with my third finger. I don't ever expect to be either. This means I am hitting CTRL-R many more times that I used to need to in MTW. I sort of understand this as it makes dropping units on top of eachother easier but there was the ALT key to alleviate this problem.

Grouping units makes them unusable. You can't paint them into place and to some degree you can't give them orders. Is there a way around this?

When I double click on a unit in the troop window MTW would scan across to that unit and RTW does the same thing. But in Rome if you move the mouse the slightest bit you stop moving toward that unit and are looking at some meaningless spot on the map. In MTW you would just be dropped there. I hate the new way, it takes too long to wait for the scroll to get there.