I got the Pack last year with the Athelon chapionship armor and AR and Magnum skin. If I got this one would I get anything new or the same stuff/waste of time?
You’d probably get some rp and skins or customization reqs.
You should be missing the HCS Contender BR, Red Contender AR, BR and Magnum, and the Blue Contender AR, BR, and Magnum. If you already have these skins, then I suggest not buying the pack.
I did and I had bought the pack when it was first offered as well. I received all the remaining HCS weapon skins. I believe you will have to open two to get them all. I think it’s worth it. 160,000 REQ’s is nothing for those of us who keep a good supply in the bank.
Dang, there goes my only chance to get these skins for free 
If you have all of the HCS stuff, all you will get back is a bunch of ARENA xp/rp boosts, not even legendary boosts.