This is really not far to those of us whom have redeemed bundles in the past. Our gear should be upgrade to level 100 as well. Buying the same bundle/pack again to get the same gear at level 100 seems very one sided. Especially if that gear is like Jade or Pixie's gear. For those of us whom invested a lot of crowns in getting this gear to begin with it a raw deal.
The updates affected Bundle gear only as far as I know, not gear from card packs. The same argument could be made for people who bought a bundle at level 10, 20 , 30, 40, 50, 60, 70, 80... they all think it's a "raw deal" that they don't a free upgrade every level, but that's just life.
Sorry bro, you knew the level cap was going up. If the level 90 gear is so good you would buy a bunch of packs for it, it oughta be good enough for level 100. It's not like there are any major dungeons at that level.