I now have the awesome Galaxy Tab S4 (256G/LTE) and after a few days of heavy usage, I am not regretting buying it, however there are some frustrating issues that I hope Samsung will address soon. (Do they watch these forums?)
Option to not rotate screen buttons: (I find this super annoying!!)
Unlike the GS9+ when you rotate the Tab S4 to horizontal, the navigation buttons (App/Home/Back) move to the bottom of the horizontal portion of the screen. The big problem is that these buttons are out of reach of your thumbs if you use the device with a hand on either side. It is really annoying to have to "ungrip" the phone on one side to tap these buttons. Having an option to rotate the screen, but not these buttons is neeeded.
Keyboard Cover does not wake up the screen when opened.
I am so used to my trusty Tab S 8.4 waking up when I open the book cover, it is surprising that this premium tablet and Keyboard Cover doesn't do this. Very annoying having to press the power button each time to wake up the screen.
Things that could be better:
One thing I miss is HDR support on YouTube App :(
And an option to move navbar buttons
By the way the updates on my Note8 are consistent but in my Tab S4 I'm still stuck on June security patch..
I agree, the ability to move the navbar buttons is pretty important as reaching for the centre of the screen is much slower than having it at your fingertips when holding the tablet.