Hello! Hopefully this is the right place for this suggestion - I originally posted this on the discuss list, but was told this list would be more appropriate.
Recently, I've read some of the discussion linked in JEP 269 (Convenience Factory Methods for Collections), including why Collection Literals were shelved when brought up in Project Coin and Lambda. I believe that things may be different enough now (with dynamic constants possible, local variable inference and lambdas present, value types closer to completion, and Project Amber bringing "smaller" features under consideration) to bring them up yet again. I've tried writing an informal proposal for them that tries to answer the main questions brought up in those original discussions: https://gist.github.com/l-Luna/08b6574d0c840de93634cf8d1e43c494 I understand that it's still unlikely to be added in the near future, but thought it wouldn't hurt to bring up again.