This is definitely a good idea. I think a lot of talented groups struggle with finding an idea because the two easiest means of doing so -- solving a personal pain point or uncovering an opportunity in your current ___domain/job -- are bearing no fruit. After those avenues are exhausted they may not be sure of what path to take to find an idea. As a result, these otherwise talented folks are meandering around until they stumble upon something, which can take quite a bit of time.

My co-founder and I were in a similar boat until we found a process that worked for us to uproot unmet needs, but, if we hadn't, we'd definitely be exploring this track.