Currently the properties, (and somewhat events) in @Directive take a Map rather then an Array.

The argument for an list rather then a map, is that most of the time we should not be renaming the properties, which creates a lists such as these:

{
  'title': 'title',
  'name': 'name',
  'nickname': 'nick',
  'age': 'age'
}

These are necessarily wordy! In addition it is hard to spot the renames. Did you notice it? Instead we should have this syntax:

['title', 'name', 'nickname <= nick', 'age']

This syntax is less wordy, and it makes the renames very explicit. It also encourages developers to keep the renames to a minimum.

This should apply to both: properties and events