For a well-adjusted quad line kite, flying forward and backwards should be equally easy.
As mentioned back on the first page, the kite should effectively be "in neutral gear" when lines are properly adjusted. When you hold the lines up in your neutral posture, the kite should not have any drive forward or in reverse. It should float evenly, with no drive.
If it takes effort for you to stop the kite or hold in a hover, lengthen the top leaders or shorten the bottom leaders. It should take a bit of effort to launch and to fly forward, but none at all to stay still.
Many beginners have their top leaders far too short, or bottoms far too long. Their kites dart around quickly, and take effort to attempt to slow or stop. It makes it easy to launch, but quite difficult to control, or sometimes, makes it near-impossible to simply hover, let alone fly in reverse.