Widescreen patches: Community patches for 16:9 rendering without stretching.
Texture upscaling / Custom shaders: Improve visuals beyond original resolution.
Built-in cheat database (use cautiously): PCSX2 includes an "Enable Cheats" menu with pre-made PNACH files for some games—only use for debugging or accessibility, not to bypass gameplay.
Focus on mastering the game as designed; the emulator's tools are meant to enhance accessibility and preservation, not shortcuts.