Tweaked the Parameter descriptor TO-AMEND

NOTE: move this to after the builder changes,
as this commit does not actually run right now

- Now, parameters are front and center.
- Actual values are not returned in __get__;
  however, they are stored as underscored versions of the parameter.
  - E.g, ens.dimensions returns a Parameter object.
    ens._dimensions stores the actual int value.
    Setting ens.dimensions = 10 changes ens._dimensions to 10.