Kond3PCouple places in hightower barely have any contrast. I assume there's going to be other cases like this in other maps.
RED1
RED2
BLU for reference
for pic2
Spy's arms not going invisible is only really a problem for dead ringer, but it's there.
Also, is custom crosshair installation process unchanged? There's so many clientscheme.res files.
I don't really know what I can do for those first ones, I could always try to increase the saturation of those sorts of walls but I don't know if there'll be any inconsistencies anywhere else then.
As for custom crosshairs, I have afaik every crosshair font floating around properly set up in \resource\schemes\clientscheme_crosshair_fonts.res but none of them (other than fog's v3) actually declared yet in a usable form.
The res file I use to place crosshairs is \resource\ui\base_customs\crosshairs.res though it's a bit more empty than I'd like.
Though following this is 100% optional and you could still install them the same way as before, it just might be a bit messy.