I mean yeah we're mostly on the same page... but it should be clear that I'm not suggesting crazy detail everywhere, mostly just being a bit more intentional with model design when possible to integrate vertex color (or another old technique, use multiple objects when it means a simpler mesh). And I mentioned Spyro's texture/LoD system which is good, was going to mention sprite usage and also Crash having only 2 textures (shoes, back) but was too wordy (also Crash taking advantage of a linear camera for custom culling and view-specific models).

I'd say it's really good to give variation (and unique-ness) on detail and effects that way every tiny thing you decide to add isn't a fixed workload. Or in some cases the opposite approach, a more re-used/modular design for certain things like characters.

The problem with textures (aside from data w/high-res/high-color, resolution dependency, and workload) is that when you play an older game at modern resolutions (higher internal res or even just a Flash game) the elements that were designed for older resolutions/displays are really apparent next to the meshes that scale perfectly. Particularly if it's a GUI or pre-rendered cutscene (sometimes other random stuff). Textures on meshes can still be a really solid aesthetic for the environment/characters.

Also generative textures might be a potential fix for the drawbacks (see .kkrieger), or something like textures that are designed to be used with an upscale filter (or in a similar way, maybe converting to SDF textures).