The GPad X2 8.0 Plus fits the description of "middling" with an 8-inch 1,920 x 1,200 screen, 8-core 1.4Ghz processor, 2GB of RAM and 5-megapixel front and rear cameras. LG doesn't seem inclined to build high-end tablets anymore -- as of today, its priciest US model is the oldish GPad X2 10.1-inch, which runs $350.00 or so and doesn't have any kind of optional dock.
Rather than going for better specs, LG and T-Mobile are offering the GPad Pack Plus dock, which attaches to the tablet via a set of pogo pins. That could easily stand-in for a Bluetooth speaker that happens to have a tablet attached, assuming the sound quality is decent. Since it supports LTE, you can stick in a nano-sim to get music and videos on the road.
If nothing else, this shows that Android tablet vendors are feeling the need to get more creative. Apple is still selling plenty of iPads, thanks in part to and effort make them more powerful and business-oriented with the iPad Pro lineup. However, Android tablets are suffering because business users prefer Windows-powered convertibles like the Surface Pro -- or, if money is an issue, Chromebooks, which are also becoming more like tablets.