I'll definitely be removing the plastic dowels. I'll probably keep a long stick from my apple tree on the bottom so he/she can easily reach the water bottle and food dishes and play with the toys in the front.
Also, to answer your question, yes that is a swing on the left. It has rope on it, so if the bird messes it up / loosens the strings I'll either re-tie the rope tighter or replace it with a normal metal and wood swing. I'm sure he/she will enjoy the little bells on the bottom, though!