This seems to be coming up more and more with the reduced cost of the dragon rider, but people are spending all of their sigils on getting really far along the branch/completing it and being completely unaware that they can’t get every single skill tree item.
I am 100% aware that if you click on the “i” that it brings up the menu which tells you that not all skills can be selected for a dragon rider but many many many other people are unaware. Is this something that could be a little bit more pronounced in the Rider UI menu right below the “select upgrade” button so people see it before clicking to upgrade that item? It would be good for players of all skills instead of a confirmation screen every time you want to spend points, but it would serve as a reminder to make sure you are picking what you really want.
Picture for visual aid (you will need to click because apparently the formatting doesn’t like the width of the picture sigh)