Valid arguments.
1. Absolutely not to having the be 4th Av local at all times. The line is already as long as it is, and there needs to be some type of Broadway express service from 4th Av.
2. I agree with your Queens Blvd proposal. I would however run the at a special odd frequency since headways won't be even along QBL otherwise, which is why I also proposed it running to 179th St.
3. If your going to run the on weekends then there's no point in having the run there as well. Either run the to 2nd or run the to 145th St.
4. On the topic of the , if there's any room to add in more trains by ending them at 2nd Av, I would also propose that.
5. On the topic of the , I weirdly propose attempting a skip-stop program on it to see if it actually balances ridership west of Myrtle Av.