Cherri, they could. You should go down the list one by one and go to a populated area to see what it feels like, or if you notice a difference in visuals.
Things you should try to "fit in" to have though, as they can make a visual improvement, at almost no performance cost:
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Set Textures to Uncompressed, Fonts to Uncompressed, On-screen Maps Uncompressed
Config > Misc 2 > Background Aspect Ratio (16:9 is the most likely by far)
Maximum clarity but large performance impacts:
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Set the Background Size to double your native resolution, for example 1920x1080 would be 3849x2160.
/drawdistance setworld 99 (99 is really overkill, even 10 is overkill. Try just 2~5 if you want further drawdistance at lower impact; 1 is the default maximum)
Misc > Shadows > High