Things that one needs to get right when capturing an image -
1. DETAIL, DETAIL, DETAIL (this means pixel level detail, regardless of whether you're making a print for web or a 24X36 print, pixel clarity matters)
2. Wide dynamic range with no blown highlights
3. The moment (be it expression, foreground/background, etc)
4. DOF
5. Frame (with tolerances for cropping in)
6. Polarized light (sometimes)
7. That's it
Everything else can be fixed/corrected/improved in pp. Stuff like color, WB, sharpness, emphasis, skin tone, graduated filtering, any kind of filtering, etc
Examples of pp and image-making (I love visual clues) of what capturing good detail gets you -
Triangle Triangle
Do feel free to correct me if you feel otherwise.