1) In Transforming field values, recommend the delegating field transformers over any other transformer as a best practice. The delegating transformers should be your first choice since they are the most versatile.

2) On the same page, discourage the use of the following transformers:

• MultiValueChildrenNodeTransformer
• MultiValueSubChildNodeTransformer
• MultiValueSubChildrenNodeTransformer
• MultiValueSubChildrenNodePropertiesTransformer

3) Add a best practice on the Multivalue, Composite and Switchable field pages. When nesting these fields, you should use the delegating transformers.