Add Status / workflow to todos

I think todos have a lot of potential to represent non-feature work across Aha.  I like the idea of not "polluting" aha with workarounds where features are used to represent work, nor requirements used to represent non-feature related work.  There is a need at times though to show that todos are "in progress," as some can be more sophisticated than just "done" or "not done."  For example, when trying to get a quote from an external vendor, the request is made via email, there's some back and forth, etc.

So what I'd like to see is the ability to add some basic workflow status to todos to represent this.