Although I find that I always agree with your opinions and suggestions - I guess we play with a similar aim in terms of our desired experience, or we're long-lost twins

- I think only the 3rd one has a hope of being fixed. I believe it is just a collection of circle-textures strung together, after all, so just need replacing with transparent ones. I expect the others are rather difficult to change/fix.
On a similar note with the sound issues, I'm currently following a convoy in a very bad storm in GWX 2 and one of the ships constantly makes the creaking/squealing sounds of a sinking ship. I even got inside the convoy once, watched HMS Nelson sail on by at <200m (first battleship sighting ever, argh!!

), and had this 'screaming' ship sail overhead too. It's happily afloat, not even listing. More of a random occurence than the things you list, so probably irrelevant to the discussion. Sorry