Hello all, I was asked to share a comment that I made on the talent thread a ways back so that it could be linked to.
For background, I've played this game since it came out, and have had the pleasure of knowing some of the top players and being in some of the top guilds in the game (Arena Legends for almost a year, now Blackskies). A lot of the players I've gotten to know have been a tremendous source of information. Hopefully what I've learned from them can help you with a basic, simple, guide to where you should be putting your talents.
Without further ado, here's Nug's condensed talent guide:
There aren't many relevant end-game talents, so it's not really necessary. I can whip up a guide right here:
Enlighten goes on any hero you want to evo/devo (and are going to use) and don't have good talent for yet.
Revit is pretty much best on any buffer/debuffer. PD,Cupid,Val,Med,Arc,Molt,etc... (it's a long list)
Corrode best on SK, top 3 for DD.
Scatter goes to long range debuffers like Molt, Arc, or PK
BW is a good all-around talent on any dmg-based hero, esp. AOE. Vlad, DD, Ghoul, BT, GF, whatever
WG is best on dungeon-only heroes like Mino, SM, Santa.
Stone Skin is most underrated talent. Esp. good on GW def heroes. Best talent for GF, top 3 for DD+BT+Ghoul+Dest
Flame Guard also sneaky good on GW defense. Top 5 for same heroes as Stone Skin.
Berserk goes on PD if you don't have revit.
HW is ok on tank like DD/SK/Ghoul/BT until you get something better
Every other talent is filler. Not ideal, but most of them usable.
The pretty much worthless talents: Self Destruct, Deadly Strike, Condemnation, Blade Shell, Scorch
The OK talents that are useful but better served as crests: Revive, Heavy Blow, Slow Down, Tenacity, Sprint, Life Drain
Fine Print:
Obviously these recommendations aren't set in stone. Some heroes do more than one thing - for example, they both debuff and do AOE (area dmg) - in this case which is better? Well, it all depends on a number of factors that are impossible to cover all of. To name just a few - where are you using them primarily? What crest sets (and how strong) do you have? What talents does the rest of your team have in this mode? etc. For one example, PK is both a debuffer and a dmg dealer. BW and SS are both suitable talents, as well as scatter.
This is just meant to be a quick overview of what a good thought process to have is :)