Thanks for the photos.
The biggest issue is the stack pack is interfering with the foot of the sail. It is not allowing the foot to fall naturally below the top of the boom. This causes it to bunch up like you see on your sail. Here's a photo of a loose footed sail, notice at the midpoint the foot is an couple of inches below the top of the boom.
Next, the clew is not being restrained and held closer to the boom. See the photo below. There are different ways of holding the clew down, in this phot it appears there is a heavy duty velcro strap through the clew. Without the strap the clew rises a bit which affects sail shape especially in the lower half where most of the power is developed. The outhaul car is also important as it helps to hold the foot down.
The tack in relation to the boom does look to be too high. There appears to be a fairly large gap in the gooseneck fitting and the shackle raises the tack even higher. I don't know whether this was someone's better idea or if this is normal for Bavarias, or if something in the gooseneck fitting is not adjusted correctly.
Look at the luff and the gap between the luff and the mast. Above the first slug the gap is straight and narrow, the sail is close to the mast. Below the first slug the sail angles away from the mast, the gap gets larger, this seems unusual and may add to some of the bagginess at the foot. Again, I don't know if this is unique to a Bavaria or if something is amiss with the tack and gooseneck.
Finally, I found the video on the differences between a fixed foot and loose foot sail. I didn't watch the whole video, it might contain some useful information. Precision Sails is a pretty big outfit. They supply a lot of sails to the cruising community.