Having formations is always interesting

Can I make Rotos as a Tanker? That seems to be a good position for him. 

Duchess will be unstoppable in Supporter position as she will keep reviving, giving veil on the everyone, and she will only receive 60% damage. 

.::WAYLAND::. said:

matchmaking is correct its just you are weak for your group

Well maybe, just been hanging around in silver 1 because that's what I set up to do after reaching that "get to silver 1" mission and got there in less than 1 month, and then neglecting building them for the another 1 month because I want my CB team to be able to get to NM from Hard, and just able to get to 3key Brutal now... But sure, I'm the weak one in the whole silver 1 tier

JoinME said:

Having formations is always interesting

Can I make Rotos as a Tanker? That seems to be a good position for him. 

Duchess will be unstoppable in Supporter position as she will keep reviving, giving veil on the everyone, and she will only receive 60% damage. 

It's pros & cons, anyone can be tanker even a squishy coldheart, up to player arrangement. Let say the formation like below:

    o

o      o

    o

or 

 o   o

   o

   o

(this is in setup screen, on battlefield does not change, screen may show some symbols on champ's top to distinguish each position)

Player place champs in any positions he/she wants.

Develop formation shall open more space for new champs, for example: 

- tanker will have passive skill: revive + unkillable for 2 turns. 

- damage sensitive debuff: +40% dam receive

- steal buffs champs will be more popular.

- may have new debuffs skill that cause damage like a critical hit, because debuff is not limited by range. 

- You pointed out: Perfect Veil buff is too OP, it's even OP when don't have formation, should nerf Perfect Veil/Veil buff, for example: when you are hidden from attack, your attack only cause 60% damage, it's fair and square. 

matchmaking is correct its just you are weak for your group