I believe Horace Harding Blvd is one of the priority corridors. So, they’re probably looking to implement Traffic Signal Priority, and/or bus lanes, etc.
Having the those routes as rush routes would definitely improve service.
One example, one evening I was on the Jamaica bound Q5 from Green Acres, there was turnover along Merrick Blvd but also an accumulation of passengers, the bus was packed by Springfield Blvd. It would have been nice if the bus could have rushed to Jamaica at that point instead additional intermediate “local” pick ups and increased dwell time due to the passenger load and red signals due to not running straight to the next rush stop, that a frequent “local” bus could have handled. (Doesn’t have to be the Q25 though.)