Thank you very much for the fantastic review!
Looking at the list of upcoming features:
1. This is either the upcoming update or the one after that. Although I doubt that I will be able to implement it across different search instances.
2. Grouping on the search results page might not happen. There are too many factors to consider, and I'm not sure if it is even possible to somehow change the final layout of the search page, as it's fully outputted based on the search.php file in the theme directory.
On the Frontend Search Settings -> Ordering panel there is a field order option. Try to drag the custom_post_types item to the top, and check if that changes anything: https://i.imgur.com/7lgO5t1.pngBest,
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