/2/tweets/:id should support a username query argument
Fetching individual or lists of users via ID is obviously always preferable, but there's cases when that's simply not possible.
The v1.1 API had option to pass in username/screen_names instead of IDs and it'd be great if v2 had the same option.
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Thanks for this! Just to help me to understand better here, are you talking about the Tweets endpoints from v1.1 (statuses/show and statuses/lookup)? Or do you mean the Users endpoints (users/show and users/lookup)?
Currently in v2, you can query the Tweets endpoint by Tweet ID(s). The Users endpoint can take either a username, or an ID or range of either.