Though my complaint as per usual is that most characters tend to have crippling overspeacialization. No feats that let you get Weapon Focus or Improved Critical en-masse. Same with Spell Focus and Elemental Focus. All classes need to speacialize in a specific area to be really good at it. However, feats are sparse which means you can't speacialize in a lot of areas. This means you're always gonna need a party. You can't solo late game unless you use exploits or min-max hard with the more overpowered Mythic classes. Trickster in particular has potential for solo builds due to Trick Fate. Gold Dragon is good for spellcasters. Since it basically makes them into really good tanks, and ups the damage of all their spells.