include a button in the set animation dialog box to show animation list, currently that list is shown by putting "
There may be people who do not know this (people who start with the tool) and they write between the two "" that appear when opening the dialog box, so they never realize that there is such a possibility
The button would imitate the drop-down list, but it would not be a drop-down list, it would simply be a button imitating the drop-down list, to display the list without losing the functionality of writing expressions in the text box
There is already a list; this suggestion appears to only be to make it more discoverable. We believe this is already an easily discoverable feature since you must type a " to enter the animation name, at which point a list appears. By default the animation parameter is fully selected so it's easier to start typing with " than to try to enter text in between the quotes. This is consistent with several other kinds of parameters (e.g. groups, functions etc.) and as far as we're aware this is working just fine and most people find it OK.