We traditionally followed old TnT scale of difficulty. Since influence of 'authentist' weakens these days, so revised TnT scale wasn't successfully implemented to osu! Taiko community. I can show some sample maps for each difficulty for both scale since they are basically similar, but hard to tell exact principle, I guess. We don't need to strictly follow those scales though.
Some basics about TnT scales
- Basically 4 difficulty level: Kantan/Futsuu/Muzukashii/Oni. Prefix 'Inner' is used when there is one more map for certain difficulty level, and it doesn't need to be more difficult than original one. (But in osu! Taiko community, Inner Oni means maps harder than general Oni maps.)
- Maps are divided into Kantan/Futsuu/Muzukashii/Oni first, then get star difficulty scale. Due to this, even if the two maps which are in different difficulty levels have the same star difficulty scale, actual difficulty of the maps can be quite different. For example, Oni lvl. 8 is usually much more harder than Muzukashii lvl. 8
- Maximum star difficulty scales are:
65 for Kantan, 7 for Futsuu, 8 for Muzukashii, 10 for Oni. (Some osu! Taiko mappers are using above this but those are kinda dogmatic.)
- Difference between old TnT scale and revised TnT scale is redistribution of star difficulty scale for Hard maps. For example,
Saitama2000 which was Oni lvl. 9 in old TnT scale is lvl. 7 in revised TnT scale. (NBGI did not re-rate every maps though.)
EDIT: Whoops, wrong in maximum star rate in Kantan.