One thing I've noticed about Construct is a lack of explanation about what anything does. While most things are self-explanatory after you've used them once, there are certain features that aren't so obvious. What I'd like to see is a help button that gives a small blurb about whatever you click on does, and anything that's interesting or not immediately apparent. (You can move sprite hotspots with the keypad?!) It could be placed in the upper-right corner next to the About button, and placed in a similar location.
Yes, there is a "help" button already in Construct. However, the first place to find information about Construct should be Construct. The wiki and forums, great as they are, are on the internet and therefore not available when the internet goes kaput.