The battery is already rechargeable so it can be same with wireless charging. Actually we don't even have in-camera charging via a cable, which is really poor.
Great point about messing up the seals via repeated opening of the covers.
Current-technology (I mean the last 5 years) wifi transfers about 20 megabytes per second (that is application to application) if correctly implemented, which would transfer a raw file in 2-3 seconds. Here are some RAW files
The F* ones are from my Samsung S7 phone which I use mostly in RAW too (12 megapixel).
Wireless charging is a great feature. I have not bought the best camera phone currently out - the Huawei P20 PRO, which should finally match the amazing camera of the Nokia 808 - simply because I don't want to be constantly plugging in and pulling out the rather stiff USB-C cable. Especially with a car holder where you have to do it single-handed... another story.
Unfortunately people
do compare DSLRs with phones, and walk away when they see how features which are obviously really easy to implement aren't implemented, and there is no clear reason for that.
And the number of people who are willing to carry a 2kg+ "weapon" to get great photos is reducing all the time. Not quickly, because phones are constrained by physics and are making very very slow progress, but it is happening. For social media a phone is already good enough. We have already seen the almost total death of pocket cameras (a 500 quid one is as good as a DSLR, in suitable and fairly common circumstances).
I am putting my Canon Legria G40 on Ebay shortly. Bought it 2 years ago and hardly used it. Fantastic video quality, HD at 50/60fps (I wish the K1 did that; it soooo easily could), totally stunning stabilisation. But it is too bulky, which limits its use to ... almost no opportunity at all.