I'm not sure of your townhome's layout, but are you able to maybe move some of the living room toys towards your kitchen? that way you're not necessarily adding more toys altogether, but so that you still have toys to keep your daughter occupied while you work in the kitchen. Also, if you decided to have another child, and you threw away (or gave away) all of your daughter's old toys, you might feel compelled to purchase new ones for the baby. As a compromise between you and your husband, maybe you could pack away a few toys she no longer plays with as you gradually add new toys. If you never have another child, you can always sell the older toys at a yard sale (at least make a few dollars off of them). Also, how often has your husband been home with your daughter by himself and tried to get some basic household chores done? Maybe he should try and he might get a better understanding of why you have 2 or 3 "toy stations" situated around the house.
My husband also got annoyed at the few toy stations we have in our house, particularly the small box of toys in our bedroom (which I had for our son to play with while I finished getting ready for work in the morning). But after he had to get ready with our son in the morning wihtout me around to help, he recognized the value of our little toy box.
Good luck...I hope that helps a little!