I've yet to buy this classic, so I'll have to wait out screen captures on this 4K remaster to compare with the original. The few remastered Blu-rays I've seen in person I've not been a big fan of, e.g.
First Blood and
The Matrix. The contrast and highlights always seen to get way blown out during the 4K HDR to SDR conversion. Not sure if this is the case with all remastered Blu-rays in 4K releases, but it's been my experience with the two titles above.
Here's a few extremely crude comparison pictures I took from the
First Blood 2011 release and the remastered Blu-ray from the 4K release.
https://imgur.com/PGMHxuJ
https://imgur.com/5bMxnBU
Here's hoping the Top Gun 4K remastered Blu-ray is handled with a little more care.