Suggest: Skillbook highlights;
What I'd really like to see involves skillbooks.
When I highlight a skillbook in a vendors inventory, it should highlight any thing that I can't do in red text to indicate that I won't be able to currently use that skill book.
For examples... If I am looking at a skill book at the vendor and it requires that I have the Hydrophysist skill but my character does not have that skill, then the word Hydrophysisist should be written in red to tell me that I won't be able to use that skill book at the present time. Basically do what you've already started to do with regards to how the level requirement is written in red if I'm not of a high enough level to use the skill book.
I'm actually quite surprised that you guys at Larian have not added the necessary skill to the skill book under the level requirement so that players know if they meet all the criteria to use the skill book or not.
Sure, there are many that know their characters inside and out but I'm getting old, my brain is farting dust at times so it's hard for me to keep track of these things and I don't really feel the desire to go and try to remember what skills my character has before making every purchase.
This really should go across the board on every item, anything that would prevent the character from using an item (bought, dropped or found) should be listed in red text on the items info sheet. Not terribly important on dropped and found items since their free anyway, but definitely important on items that we can buy.