I like when CG helps the newer players catch up ... I certainly don't have a problem with that.
Where I see an unexpected advantage to some players (who probably aren't "new" players), which I haven't seen mentioned, is in GAC. I'm in Kyber 3 ... about 1.5 months away of finishing SEE and having all GLs except Leia ... and have Starkiller (yada, yada, yada). About 30% of my opponents in Kyber 3 don't have Rey, and about 10-20% don't have Starkiller. This gives them a great opportunity to catch up quickly ... and that will have some impact on the balance in GAC. Perhaps it won't be significant ... but that's where I see these packs potentially tipping some balance in an unfair manner.
Time will tell.