are you a baseball fan? and if so, have you been to other ballparks?
Rogers Centre is miserable by comparison. your question 1 makes me think you haven't been anywhere. At all ballparks, the seats are oriented towards home plate. At the Dome, they're just facing forward to the field so when you're sitting along the first base line for example, you're looking straight into the outfield and need to turn your head to look at the place.
It's far too big and because it's a cookie cutter multi-purpose stadium from that era (with a lid), the sightlines are poor and distant. The highest seat in all of PNC Park is 88feet above the playing surface.
I think it needs to be torn down but if they're going to go with the reno route, it'll need extensive renos to open it up. i think they should rip out the hotel, rip out the 300,400,500 level seating out there and put up a glass wall to let in the light, but then the roof needs to sit on something so it's not as easy as it seems.
anything is possible with money though. Look at what the Angels Stadium looked like in years past compared to what it looks like now. it's a completely different place and you'd never know it was once a multipurpose piece of junk.
Angels Stadium Now
Angels Stadium Old