1. you can fix the viewfinder yourself if youre careful when taking the camera apart. all you need to do is change the ribbon cable (ive done it before, theres plenty of tutorials)
2. you might be better off without playback. playing back footy will ruin your heads over time, so not being able to do it at all might be a blessing. I actually used a camera with no playback for about 2 years, just got one with playback since i dont wanna keep looking bad in front of people i shouldnt be looking bad in front of