My thoughts are like this:
Classes that need to get some buffs or rework:
-Sadi (low HP of dolls, other dolls than Water one pretty much useless - weird AI of dolls, low dmg on spells)
-Dragon form Osa (just low dmg cannot be compared with any other build)
-Sram (they do such low dmg compared to others, and their mechanics are just fail mostly)
-Eca (ok ppl can say "I saw Eca hit for 1000" sure cause Eca can do that with god eca + crit + double dmg all in or 6 rolled with dice - it mens extreme luck)
I'll focus on Eca now cause I am playing one and i can tell a lot about gameplay.
Eca should be a gambler class - like u risk alot and u will have supercool award.
have enough AP to make a Leap. Flealine Army just don't work well with today's single element system. When u put your pts into this u will get a chance to do silly DMG and get silly heal.
Eca is just useless because of couple reasons:
Superlow dmg even with best AP combo u will make much more less DMG than others
Too low heals which can be overdone by any attacks (and huge heal every 3 turns - but that isn't enough for survival)
Only decent dmg skill is 1square range melee skill.
Eca is way better but:
You are only single target and if u don't have enough luck u will do dmg like 150 turn to single target at lvl 100 char. There isn't anything about gambling in Eca cause when u DO have luck u are able to do as much dmg as the other when they don't need to have any luck.
When u get some strange combo like God Eca + high WS + crit + dmg bonus from tarot
u can hit like 900 and when doq like 1500 BUT u have like 0,2% to do that.
Eca should be gambler for me it means he should be able to do decet damage and have chance to give some more or get some great stats etc. Now its just like: u have 50% to do normal damage All in *2 its round 400, and then next 50% to do like 700 but when u fail u do just 200
And when there isnt a double damage on All in and u decide to DoQ you do silly damage 250 tops and u have chance (50%) to do 0 damage to the mob.
JUST GIVE ECA SOME LOVE!
Now classes that should be nerfed IMHO: