You want punishment or discipline? Because it sounds to me that in a sense you want him to whip your ass, instead of be disappointed in you. Well don't we all!? Holy hell, if I could get him to just spank me instead of having to know he's upset, hell yes I would take that! However it wouldn't be much of a punishment if it went the way -I- wanted it to.
Yes, he should do something when you break a rule. Why not just flat out tell him you'd like him to join you here on the library. Thats what I did. It's a great site with wonderful people, and lots of handy information.
And just a heads up, if I told my Master I broke a rule, it's up to him to decide if/when/where/how/why I get disciplined. I would never walk up to him and say "Hey, I broke a rule today, punish me." Why? Because not only would he do something much much worse than punish me, it's totally out of line for me to assume what he should do. 'Punish me' is a command, I can just imagine the look on his face if I were to give him one. Instead, if I break a rule, I tell on myself. I can't help it. More often than not, my punishment will be less because I told on myself and was honest.
But, the worst punishment I can honestly think of... his disappointment. I'd rather be hung than see that look on his face.