I know emotions get raw in these situations. I've been doing the shared parenting thing now for 15 years with my son.
However, compromise has to be equitable. And very carefully thought out.
I've been a single working mom for many years and trust me...there were lots of times I was too tired to really go anywhere and run around with the kids on the weekends. My ex, on the other hand, who didn't have to clock in or out and could pretty much make his own schedule, was going here and there and doing all kinds of stuff. He actually tried to get more custody based on the fact that he didn't have to work as much. That was shot down in flames.
My kids were quite used to having a mellow day on the weekends. We could sleep late if we wanted, make a nice breakfast, chill out and watch movies and just putter around the house. ESPECIALLY in the winter time.
My son went and went and went so much with his dad that he actually needed some down time once in a while.
Also, I think you should be careful with trying to change things so your child can have what she wants. Kids simply don't need every single thing they want. They just don't. You shouldn't feel bad because you can't take her places all the time. It's not necessary. It doesn't make you a bad mom.
Sometimes altering the schedule is just more hassle and confusing to everybody than it's worth. I mean, trading a day here or there for a special event should be fine if you both agree to it, but making major changes....I absolutely did not agree to any of that with my ex husband. He had a reason for changing something every 10 minutes and it just got to be too much.
Feelings of animosity are pretty normal, but you have to try to let go of the hate. You won't be able to have any type of healthy interaction with your ex as long as you are harboring those feelings. You won't be able to think clearly.
Keep things the way they are.
Just my opinion.
Best wishes.