LG has a real problem with screen brightness. The V20 suffers from it just like the other flagships from them. It's like half as bright as a Samsung flagship phone. Plus, the V20 was way too expensive to not have a more premium look and feel to it. Screw the removable battery. It's time for LG to step up on the phone designs.
The V20 kind of reminds me of the S5 and Note 4 build. People said it felt cheap. Honestly I'd rather had the V20 or Note 4, s5 type build than all glass which easily cracks because 95 percent of people just slap a case on it anyway.
I agree the screen could be brighter. I personally don't like my screen super bright but it needs to be a bit brighter. The iPhone has a trash screen though so the V20 isn't the only flagship with it. I think we're just spoiled by the AMOLED screens Samsung produces and when we switch to a different flagship we're not used to a non AMOLED screen.
I say keep removable battery to avoid a Note 7 disaster again and play it safe. If the Note 7 was like the Note 4 and you could remove the battery, Samsung could have simply issued very slightly smaller batteries to solve the issue of the battery being just a tad too big.
IMO the big three, Samsung, LG, and Apple make their devices too expensive. As Flossy says about these top flagship phones on his reviews "The price is too damn high" and he's right. IMO for the V20 launch price I would have went with $ 680-700 and $725 for the Note 7. $770 for a 32gb 7 Plus is way too much too when it doesn't have expandable memory.
Really your major choices in the top of the line smartphone market in North America, Europe seems to be Samsung, LG, Apple and now the Pixel line. I'd like to see Huawei get into the US market and make it easier to buy their phones which are very good phones and undercut these major makers which might make them all lower their prices.
The smartphone market is a monopoly basically by just a very small number of companies which allowed them to charge a lot. Just like how there are not very many major cell providers to choose from which causes less competition and higher prices. I'd like to see more competition to force these major makers to lower their prices.