My experience is similar that adding to these tools starts to diminish usefulness. I use a 4-point sheet that sort of resembles SWOT analysis and I think that is about as far as it can go for me. Also worth mentioning what and when these tools are relevant, for coffee shop meetings or initial/weekly KPI meetings a "back of the envelope" type tool makes complete sense. But whether a founder or an investor, at some point it's worth a deep dive into each piece of the puzzle to really back up initial thinking with more info and data (market research, user feedback, comp discounting, sanity checks, etc.)