They could add back the N6 Limited, keep the Express and split the trips between the two and keep the Local. That would help balance the heavy loads in Elmont (they are closer so they could use the Limited/Local) and people in Queens who can't get on at 169th/179th.
As someone else said, the issue with the Limited before is that for those passengers to/from Hempstead is that the trip would often take over an hour. I am not sure how NICE timed the Express routes, but they are way, way too short considering the traffic in Queens and Elmont. Many of those passengers are then using the terminal to connect to another bus. The idea behind the Express is a good one, it will take time to find the right balance, it has not even been one month.
I have noticed heavier loads on the Express so there is demand, but probably not enough for there to be one local for every express.
The N6x has been a nightmare this week, between bunching, buses not showing up on time...drivers and customers are very aggravated. Lots of breakdowns (so say the drivers)/issues on Hempstead Tpke. Late departures from Hempstead, no buses home from Queens...schedules don't seemt to matter much anymore. I waited 35 minutes for an express bus yesterday.