I'm sure someones's already posted the idea to bring back the functionality of restarting a task within a job so you don't have to restart the entire job. It would be very nice to have this added back in.
Also the ability to restart a job for all those machines that failed. For instance if I drop a job on 100 machines and 30 of the fail for various reasons. Maybe the machines are off, they're already running windows updates, etc. It'd be nice to be able to select all those machines that failed from the job status window and restart the job for only the ones that failed. Currently we have to go in and add all of them back into a new schedule which can take forever.