Question 1 - Hub Damage:  Upon inspection, I’ve discovered that the front hub has some damage.  You will see in the attached photos that on the drum (right) side, that portion of the hub that would normally keep the smaller top hat spacer captive has cracked and separated from the hub body.  See the jagged ring on my fingertips in the first photo.  The second photo shows in better detail the jagged remaining ‘shoulder’ on that portion of the hub.  From what I can surmise, this damage will not affect the function of the hub in a material way.  To my mind, as long as that shoulder is there, when I remove/inspect/clean/re-grease/re-install the bearing stack, the stack should ‘bottom out’ against that shoulder, and everything will be where it should be.  I will, of course, be on the lookout for any signs that one or both of the bearings has spun in the hub.  Am I correct in my analysis and conclusions in this regard?  Is there anything I am missing or misinterpreting?

Question 2 - Bearing Seal (drum side):  In the BMW parts fiche, it appears to be telling me that before 08/73, BMW did not install a bearing seal on the drum side of the hub (other than the felt ring).  From 08/73 on, they installed a rubber seal similar (but not identical) to the one on the left side of the bearing stack.  Since I will be in there anyway, do you think that I should install the appropriate seal in that location?  There appears to be some amount of space between the bearing cone and the jagged shoulder referenced above where the new seal could/would reside.  Installing a bearing seal here would also have the added benefit of capturing the smaller top hat spacer.

I’d be interested in any thoughts the collective may have in this regard.  Thanks!