Slider for number of elements in Firefly (beta)

I don't know if someone has already mentioned this but in my exploration of Firefly Text Effects, it might be useful to have a slide for the number of items that appear. I was experimenting with the word 'lock' and then adding 'padlocks' as the effect to apply. The effect was successful and looked pretty good, but the number of locks was a little too high. It would have been useful to reduce the number of locks that appear and therefore make more use of the shapes of individual locks to create parts of the letters (particularly the classic curve of the top part of a lock to shape parts of the 'o'). I appreciate this is probably quite tricky to implement but if its possible, would give a little more control and potential impact to some of the results.