Option 4: Implement 'hard' skill checks

To be fair, most of those running Juggler teams clearing descends or challenges with utter crap subs are really good players. Most of us are salty not simply because Juggler is plain overpowered, it's because you can somehow spike with playing skills only comparable to Odin/ Ama teams. If they buffed D/D Anubis to deal 20X to 50X, we won't mind because of the skill (and luck) barrier. I was not too impressed when Sonia Gran descended (proclaimed hardest) dungeon stats were announced since it was another bring bigger guns in if you suck dungeon, like everything in PAD.

Here I'll demonstrate what is a 'hard' skill check:

Sonia Gran - 6M HP, attacks every turn, 2000 Def

耐性 - All damage received -100% (passive)
よく来たのう、勇ましき者よ - Status immunity (pre-emptive)
Skills used in order:
龍の雫 - Damage dealt +50%, damage received +20% (buff/ stackable/ 999 turns)
継界召龍陣・双龍帝 - Changes all orbs to fire/ dark, disables skyfalls (similar to PADW)
ヘルポイズンブレス - Deals 1000 damage times number of remaining orbs and bottom 2 rows become poison orbs
継界召龍陣・結晶龍 - Changes all orbs to water/ dark, disables skyfalls
ヘルポイズンブレス - Deals 1000 damage times number of remaining orbs and bottom 2 rows become poison orbs
継界召龍陣・岩砕龍 - Changes all orbs to grass/ dark, disables skyfalls
ヘルポイズンブレス - Deals 1000 damage times number of remaining orbs and bottom 2 rows become poison orbs
ディバインスター (3 turn move) - (1) Sonia Gran disappears from view, board refreshed, 3 adjacent columns are marked and skyfall disabled. (2) Deal 1000 damage time number of orbs in remaining column, 3 adjacent columns are marked and skyfall disabled. (3) Deal 1000 damage time number of orbs in remaining column.
... - Skip turn
<repeat from top>

When 龍の雫 hits 5 stacks, ゼロ・ブラスト - HP -999%