When I started playing the game I had item glow and lootables on, and I put a single point into detect herbs. When the first major patch came out that offered the discount respec, I ended up taking that point out and turning off item glows because I felt it was detrimental to immersion. I choose to play this game more like a single player than a MMO, so I tried to minimize any invasive alerts. I decided if I found resources I'd have to do it the hard way: by identifying and recognizing their shapes and colors. I have points invested across the board in all professions but my focus started in alchemy and I consider that my 'main' profession.
Some herbs are easier than others to identify by sight alone. Bugloss is purplish with 3 flowered stalks, cornflower is bright blue with large flowers, lady's smock is thin with a cluster of white flowers at the top, imp stool orangeish and short and plump, namira's rot brownish and slightly bigger, luminous russula conical and brown etc.
There's two herbs in particular I've found increasingly hard to get lately, and it's bad considering they're the most coveted herbs in existence. Mountain flower and columbine. I'm not sure if it's the areas I currently quest in or the design of native plants, but they're very difficult to make out against ambient grass. Now someone might say "turn grass off" or "spec into detect herb". I choose not to, as I said I try to identify by shape alone, but their colors and size often kind of blend in too much with surrounding foliage. Most of the time only time I find either is if I literally trip over it. Columbine is very short and the red blossoms low to the ground. Mountain flower's single red tongue kinda gets overlooked in a landscape with alot of grass with reddish/purple hues. I had the same problem with kreshweed for clothing, that also had reddish flowers, or spidersilk in a landscape with white flowers.
I would happily buy from guild traders the only problem is because these two herbs are so heavily used, traders seem to only want to sell them for astronomical prices. I'm talking easily 10k gold for 15, 20k for 50 etc. Which absurd because I see people selling/ buying stacks of 3stat restores for 10k/100ct.
I don't expect spawn rates to be increased or anything of the like, just maybe a graphical tweak to make them more distinct. I can spot mahogany out the corner of my eye, backtrack and swing to a cliff for quicksilver, run happily to a yellow-orangeish flower only to find it's silverweed, but for the life of me mountain flower and columbine are a pita to find.