Xfinity Stream and Samsung TV Question

I am an Xfinity user using a NU7100 Samsung TV.  Can I make the Xfinity guide the default TV viewing experience after you enter the app?  When I hit guide to change channel is reverts back to TV Plus guide which comes with the tv.  When I hit channel up/down and then select enter, it does give a mini guide that does stay within the Xfinity app but it’s limited in that the mini guide doesn’t show what’s playing on what channel and you can’t scroll quickly. 

I’m using the Samsung remote that came with the TV.  Is a new remote like the Samsung

OneRemote remote control the answer to that limitation?  Is there a way to make the Xfinity stream app one of the default apps that shows up on the bottom banner of the tv, so you don’t have to select apps and find it each time (or select recently used apps)?  Thanks!