I found a work around for the grid issue. If your running xposed then download and install the "App Setting" module. This will allow you to change your DPI per app. Once installed, open up HTC Blinkfeed in the app list in the App Setting module. Change your DPI from 0 to 380.
Now set up all your favorite screens and widgets. Don't worry about everything look out of place and not centered. Don't worry about re-sizing widgets either at this point. Just get them on the screens where you want them.
Now go back into the app setting module and edit the HTC Blinkfeed DPI to 480. Now everything should look a lot better. For whatever reason we cannot add a lot of the widgets in the 480 dpi setting even though that's what fits best and is centered. However if you add them in another DPI then they will stay there when you change back to 480.