How have y'all built your hc toons? What class/lev and skills? Is it much different from your main (if the same class).

Making a new mage I thought I might need heal (didn't know could buy pots mid map b4)
As I move up in levels I think that 2 second invulnerable upgrade might be necessary.
wish I hadn't picked heal now, and gonna have to work on a way to respec huehue
Or I'll just die to rebuild XD

Thoughts?