I start a new thread where we can showcase and share interesting shaders.
I recently found some nice free ones and as well some payware which were generally not labelled as Unity 5.2.3 compatible. Some were part of vertex painting or splatmapping packages and most of these included painters indeed don't work in our Unity version or at least i couldn't get them to work. But some shaders of these packages still work in Unity 5.2.3 by making some tiny edits in the shader scripts.
I can go into detail later what lines you have to change if you want to try these. It's basically always the same few error messages because from Unty 5.3 and up they changed some words in the scripting.
Just an example, in more recent shaders you find the spelling 'unity_ObjectToWorld' and then you will get an error message and the shader will not work in our Unity. If you replace this line with '_Object2World' it will probably work because this was the old spelling up to Unity 5.2 or so. This doesn't mean every new shader will work because you will face so many different error messages when trying to apply an up to date shader. But some of the stuff i tested can still be used and is easy to workaround. And these are mainly just a bit newer than 5.2.3, mainly labelled as 5.5 or 2017.
Here is one asset where, again, i couldn't get all this paint and brush tools to work but the included shaders work.
As a side note there generally seems to be nearly no useful vertex painter for our Unity version available. I got one from the asset store but i don't know if it's maybe better to paint vertex colors in Blender. The painter somehow works and i probably have to get a bit more familiar with this painting and splatmapping stuff.
I show two screens of the probably most advanced of the included shaders of this asset, a height-based 4-way blending shader. Seems to work even without painting vertex colors but to paint a detail like some dirt here or there on a cartpath for example it makes sense to paint.
Here i added a simple plane and blended some Megascans surfaces.
You can see the menu in the inspector looks really old fashioned and not like in the videos on the asset stor page but who cares.
And here just for showcasing i applied this material to my cartpath and made some dots with the painter in the foreground. So it's easy to add some dirt here or there to kill repetition artifacts and make the scene a bit more interesting.
More to follow...