tbh if you only stay in Tokyo then the combined Tokyo subway pass (Tokyo Metro and Toei Subway) is the best all around deal, you don't need anything else. ¥2000 for 72 hours
Hard disagree. It doesn't cover JR lines, and with subway fares starting from ¥160 a pop, that's a lot of riding.
If you do 5 Metro journeys per day—which is very reasonable if you're a tourist—at the bare minimum of ¥160 per trip, you would save money by buying the Tokyo Metro Ticket for 72h.