There's a few reasons why this wouldn't work. First of all, the Q27 is long enough as it is. If you extend it further, it will become even more unrealible. Second, I don't think that anybody from Flushing wants to go to Merrick Blvd. As for the Q4, it dosen't need to be extended to Long Island. There's a reason that it's called MTA New York City Bus. If you Long Island Bus Service, take NICE.