Too many green tanks and as more heroes i get, the less I know what is the right way 
Have you an idea for this guys (also perspective)?
Wow. You have a killer in the making.
I’d go from left to right:
Alberich - Black Knight - Telluria - Vela - Joon
I wouldn’t worry about the lack of a Dark hero and stacking Fire against Telluria is already a challenge.
The way I see it,
Sartana - vela - telluria - BK - Joon would be a nice defense setup