Some are simple, one-time boosts, while others tweak the game in complex and subtle ways that will work really well for some strategies, but harm others
When a Spell Card is activated that targets exactly 1 monster on the field: Negate the activation, and if you do, destroy it
A red 4/4 dragon with flying and haste, whenever this dragon attacks or becomes the target of a spell, its controller creates a treasure token
Even if it is not centered on Salamangreat, Link 1's Bale Lynx and Almiraj can be played without his Salamangreat, so it is easy to satisfy the conditions for self-deployment
To that I answer, sure, that's probably the optimal way to go, but not everyone necessarily wants the optimal solution
These packs are designed so that popular tournament-level cards will be easier to pull