I firmly believe in the head connection as being the main feature of any Dom/Sub relationship. For me that is essential and everything else flows from that. I find intellect to be a massive turn-on and I am keen to really get to know my Submissive.
I see the Dom role as having real responsibility: being supportive, caring and only wanting the best for my Sub, so that she can be the very best person possible, in all parts of her life both inside and outside the lifestyle.
Scat, extreme pain, marking, anything illegal.