[Q]

Thank you ZeroAdunn for your comment.
1.) Ordinary shields would be soon useless when the enemy uses polaron beams, and many races do that. On the other hand 100 point of regeneration is awful much, too much IMO.
2.) I put the main defense of the Borg in the shields, so I don't think additional special armor will be necassary, and the combination of weapon and armor capabilities in the same component could produce very odd effects. Did you ever try this yourself?
3.) ??? (I may miss something, english is not my mother language).