Uh, isn't that what tablet mode in win8/10 is for? It removes much of the distractions and with an appropriate WP/text editor just sort of behaves like a tablet, but with the option to flip back into desktop mode and run all those "desktop" apps the Op is complaining about.
As much as I despise some of the crap MS forced on people with W10, the convertible idea has a lot of merit. Particularly if your lugging a keyboard around with the tablet all the time anyway. What MS needs is for dell/hp/etc to start making little 7" tablets again, and then force some portion of their workforce to use them so they understand why it was a miserable experience. The result will be better for everyone.