YOU SAID:
I wish I were dead right now.
INTO JAPANESE
今死んでいたらいいのに。
BACK INTO ENGLISH
I wish I were dead now.
INTO JAPANESE
死んじゃいたい。
BACK INTO ENGLISH
I wish I was dead.
INTO JAPANESE
死んじゃいたい。
BACK INTO ENGLISH
I wish I was dead.
That didn't even make that much sense in English.