For power bridge: Lenovo screwed it up, long before axing it. It randomly chooses the battery to drain, so the internal battery may be drained before the external. This is absolutely absurd and illogical in every possible way. If the internal battery is drained first, the "power bridge" becomes nearly 100% useless. No other device manufacturer - not even Sony, with their slice battery - ever implemented a bridge battery so poorly.
For the KB change on the _30 series. The KB change to chiclet was not the main issue, despite constant attempts to make the narrative about that. The keycaps are not the problem at all. The layout is the problem, and what was disliked the most. It's still among the better KB layouts, but not nearly as good as the old 7 row, IMO. I get why it's gone - that space taken by the keys "has to" go to the battery, trackpad, and now the speakers. Of course, this would be less of a problem with 16:10 or 3:2 displays, since they would have adequate vertical space... Instead we have these narrow 16:9 screens that are only good for some youtube and some TV content (since it's increasingly popular for digital media to be 18:9 or "wider," and movies were long, long, long [predating electronic computers altogether] in Cinemascope or wider, which was always more squished than 16:9).
Either way, poor attempts to copy the macbook have resulted in the current "ThinkBook" - hey, Lenovo even came right out and named a whole line of laptops "ThinkBook," just to further hammer the point home. Eventually, the ThinkPads will be downgraded to the ThinkBook specs, and by then, the only real difference will be an a choice of macOS or Windows - both with ever-worse aesthetics and HW engineering.