Id personally like to see Tenacity's damage scaling improve significantly, and while it already gives a lot of effects, just at very small ratios, its not very noticeable.

- Higher damage multiplier, though still less than DET.
- increased HP and healing received
- Damage reduction, even the same as it is now

Its not that bad, its just "not optimal" and so it feels bad in general; I dont think it needs major changes, as a result. Even just nerfing Crit melds would be sufficient to make Det/Ten builds potentially happen. Substats need a major change in 7.0 anyway, its been rather stagnant for a while