If you want my two Datadog favourite features, they were: 1) clicking on a field and making it a custom search dimension in another click, and 2) flame graphs. Delicious flame graphs.
One other thing I think you'd love if you're coming from Datadog is that you're able to full text search on structured logs as well, so even if the value you're looking for lives in a property, it's still full text searchable (this is a huge pain we hear from other Datadog users)
If there's anything you love/hate about Datadog - would love to learn more!
Btw I haven't checked your product out yet; I was just reminiscing :-) I'll take a look soon.