I vote for leaving Obsidian Core alone. I think it should be a lean note taking knowledge base only. Everything else should be a plugin.

I’ve thought about ignoring it, but it’s not a solution for me: appearance.json file contains other settings that I want to backup and reuse across machines:

{
  "baseFontSize": 16,
  "theme": "moonstone",
  "cssTheme": "California Coast",
  "translucency": true,
  "enabledCssSnippets": [
    "bullet-point-relationship-lines",
    "bigger-link-popup-preview"
  ]
}