I just downloaded the latest nightly 2533, enabled Widescreen patches in the settings, but it didn't work. Then I noticed there was no cheats_ws.zip included with it. Is it ditched now? Also where can I find the latest cheats_ws.zip?
The legacy memory cards folder is only used if Mcd001.ps2 and/or Mcd002.ps2 is detected in retroarch/system/pcsx2/memcards/ and the "Memory Card: Slot N" core option is set to "Legacy".
This can be useful if you were using an older version of the core that didn't use the saves folder yet, or if you transferred the memcards folder directly from standalone.