Not anymore. Treacherous tower is super easy now, upgraded firerod and tornado rod are all that you need, except for one floor where the ice rod really helps, but with those two, all you may need is one red potion for final moldorm, maybe two if unlucky. Im almost at sub 6 minutes for treacherous tower and I keep getting closer.
Should we make a floor by floor guide for treacherous tower? to help for the 100% runs, cause I foresee the Treacherous Tower being a potential run killer, and since it comes late in a run, it would be really frustrating to mess up here. I got over half the floors memorized, so making a floor by floor guide would be easy. Respond if you want it, and ill make a new thread about it
I saw your guide, and I responded with the primary issue there, but I'll also point it out here.
We can't have Great Spin for the Treacherous Tower. To have Great Spin, you must also have all 9 Items be upgraded by Mother Maiamai. While I don't think anyone has done an in-depth study, I think it's extremely likely that the Treacherous Tower w/o Great Spin wastes less time than getting all those rupees from another source.
Additionally, since the Treacherous Tower is one of our main sources for money, it actually comes quite early into the run, which makes it even more frustrating and punishing to mess up. Last night I died at Moldorm and lost 11 mins on what would otherwise have been a sub-5 hours.
After my modifications to what ZFG posted for a route, I do the Treacherous Tower with 12 hearts and green mail. Even once I get really good at it, I don't think I would go in without safety fairies ever especially since there's a Maiamai en route directly to a fairy fountain anyway.
Edit: I am entertaining the idea of Blue Mail early, though, which would trivialize the TT.