indices.create supports wait_for_active_shards however, the recent Elasticsearch commit: elastic/elasticsearch#38270 forces the use of ?include_type_name=true to allow use of the _doc type in 7.0. Types are deprecated in 7.0 and will be completely removed in 8.0.
So for users sticking to _doc for the lifetime of 7.0, it's necessary to pass this query/parameter.
It'd be great if support for this would be added. To avoid having to follow up future parameters, would it make sense to just allow passing any arbitrary parameters that the user elects to?