Maktaba's instant/ mechanism for executing files immediately has a few drawbacks:

• Costs overhead on early startup
• Doesn't interact well with various plugin managers
• Encourages overuse

It's especially significant if most plugins have an instant/flags.vim file.

We should find another convention for defining flags that doesn't depend on loading them instantly. It could work something like:

• Flags are defined in whatever standard location for each plugin
• Maktaba queues up Flag.Set operations until the flag is initialized or read.
• Flag.Get and any other attempt to access a flag's value will trigger flag initialization.
• At plugin/ time, all remaining flags are initialized so callbacks and errors trigger.

There'd be some migration pain, and it may not be worth making changes like if there's no measurable performance benefit.