I turned into TM recently with the idea of trying a dex build, but I noticed there was some inconsistencies about TM's skills.
The most notorious thing is overload being the only dex skill in the whole set up. Nothing else than it improves with dex and it doesn't have a massive damage to let you play a full dex build based on one skill. In a focus build (around 45+35 dex) overload has around 650 damage at level max, so in this case it stills useless.
So the TM skill tree comes with 1 less skill since overload is not usefull for any build.
It's cleary that dex needs at least 2 strong skills to be played. Plasma Rain used to be it's second skill, but now it increase with support.
About Plasma Rain, I feel it's ok. It makes a good combo with Malf (even it isn't the strongest Supp combo). Changing Plasma Rain to Dex would help Dex builds but would also destroy Support builds. So this idea doesn't seem to be the best, also it doesn't guaranteed dex being worth it.
Last but not least, Super Charge: the worst Ultimate skill in game. Surgical Strike and Annihilation take rage and both have a better damage scaling. Those are also a bit more flexible, they can be used in full Tech or Focus (Not the case of Super Charge). It is also weaker compared to BM Ultimate which should be similar: Maelstrom has 25% lifesteal (from bloodlust), ignore 30% defense (as Super Charge) and reduce energy by 26%.
So what can we do? I propose to change Super Charge. Instead of increasing with tech, It could increase with the highest stat you have. So, if you play a dex build, it would increase with dex. If you play focus, then it would increase with tech. The same for Str and Support.
For suppport: It won't be broken at all, we already have CH with a Support Ultimate (this one has 30% defense ignored, 30% lifesteal, 26% energy reduced and the same scaling of SuperCharge). CH has a similar set up: Kernel Panix and Neural Scythe are way similar to Malf and Overload. So this both classes can be compared.
For Strength: I would only change the stat requeriment from Dex to Tech. In this way, I dont see Str builds too strong. Super Charge needs a high ammount of energy and with this change from the stat requeriment, there will be many restrictions to play Str: Super charge requires Tech, Bludgeon requires Dex, Nanotech Shield requires Support (in case of adding it to the build).
This change would give an "extra" advantage to Super Charge allowing it to be used in any kind of build. Tech biulds would stay as they are (slightly buff if dex requeriment is changed to Tech). Dex might do a come back since it would have a second skill. Support will be definitely buffed and work similar as CH's support does. Str would be interesting, there are a lot of Str skills in TM's tree, but all of them are limited to different restrictions. So instead of using all the skills, they must use different combinations.