I wish there was a way to deposit from a Wasabi mix right into my LN wallet!
There's support for this via the RPC interface. Unfortunately not yet via the GUI.
I wish there was a way to open a lightning channel directly from a coinjoin.
This is theoretically possible. But would require quite a bit of coordination, as you'd need to get the other party to sign a commitment transaction with the specific txid of the coinjoin, prior to fully signing the coinjoin. Wasabi could probably do this if code was added to Wasabi itself. But it's not really practical to do right now.
Had lightning instead gone with the original, pre-segwit, idea for channels using SIGHASH_ANYONECANPAY this would be a lot easier.