Are Lvl 5 Units viable anymore?

[Zechnophobe]

I'm level 36ish, and been using an all level 5 army for about 15 levels. Blue, green, red, black dragons, and cyclopses or trolls. Works fine. I'd say the biggest issue with it at the moment is finding enough dragons to fill your army. Only ever seen 3 ice dragons, and 7 black dragons. Luckily (maybe) Greenwort had more than a dozen each of red and green.

I rarely have to redo a fight when losing a dragon, mostly due to my own stupidity (lulz, shooting ice dragons with overhit of red or black... good one brain).

Considering that Creation Magic lets stoneskin cap out at 52% physical resist from 40, it is even easier to build infinitely tanky units.