It is nice to see the chart of results using the choice activity (when anonymous results are published), but it might be even better if that chart could also show the limits of choices. Then one could easily see which choices have "filled up", which are close to filling up etc. (It is especially hard to see that when the limits for various choices differ.)

I suppose that those limits might be indicated by lines or by using the bars of a different colour just behind the bars that indicate the numbers of students choosing each option.

The disadvantage of showing those limits all the time is that in some cases some limit might dwarf other limits (it might be set higher than the total number of students just so that it wouldn't have to be changed in the future). So, I guess it might be a good idea to make showing them optional.