Have started to investigate Elasticsearch also. The setup took a while, but now evaluating its advantages and disadvantages as compared to the default Madcap search. I like the autocomplete feature of Elasticsearch, even though it can be slightly slow to react as you type in a search term and it would be nice if autocomplete worked for content other than headings. The fuzzy matching feature, I am a bit on the fence about because it gives unusual results sometimes.
A concern around Elasticsearch for us is that it does not work by default on Microsoft Edge, but Microsoft are rewriting Edge now anyway so hopefully it is not going to be an issue in a few months.
Unfortuantely, google search is not an option we can choose
