Session Length: all the same length, but with a total time limit?

Hi! I am wondering if it is possible to allow us to set a total time limit for the same-length sessions? So, for example, If I was to choose a same-length session of 30-second figures, but I wanted it to stop after 15 minutes total.

I often find myself in situations where I have limited time, or want to restrict myself to a certain time limit, but then I end up needing to count the figures or keep track of my watch to see how long I've spent in total, which can be distracting. Having a total time limit would be great to keep me from worrying about that and just draw for however long.

I hope this makes sense! I didn't see this in the planned features section, (unless I missed it?) so I thought I'd throw the suggestion out there. :)

Thank you for the suggestion! I will definitely mull this over. :)