Nursing a toddler- to wean or not to wean

Gideon still nurses. A lot. He's not showing any signs of stopping either. I planned on nursing for at least two years when I was pregnant and I still would like to, but, Gideon is becoming a very rude nurser.

After he bit me one night (he was asleep so it was not intentional, he's never been a biter) I was sore the next day so all these annoying things were driving me over the edge. 
Here are just a few of the things he tries to do:

Twiddle the other nipple. If I move his hand away, it immediately finds its way back. SO ANNOYING! He never did this when he was younger and I've never allowed it so I have no idea why he continues to try.

Playing with my face... which would be fine, except that he starts scratching and pinching and poking.

Standing up. Or turning his head to see behind him while still latched on.

Slapping my chest as he nurses (this started as patting gently but then he gets too excited and it starts to hurt!)

I still really don't want to wean him. Especially now that cold and flu season is here. And, it would devastate him. There would be so many tears. Not to mention it would be hard on me and Dave. Dave, of course, supports me in weaning or continuing.

So, I've made new nursing rules. No pinching, no poking, no scratching, no standing, no twiddling. If he tries any of these things, I move his hand and say no. If he tries it again, I immediately put him down. He's had a million mini tantrums in the past two days because of this but I think he'll get it soon.

If he doesn't get it, then we'll have to reconsider weaning, I guess.