For texture replacers you could select a pack which retextures everything.
Here is a nice comparison page. There's also
Ultimate Textures, which isn't mentioned on that page.
But instead of downloading simply one pack, it's better to choose individual retextures instead. That way you won't see something you don't like. You could also take one full pack as a base, and then overwrite anything you don't like with individual retextures.
IMO, almost everything made by Connary is good. He is doing new things all the time, so check back at the list every now and then:
ListAlso:
Plangkye's Telvanni TexturesWestly's Dwemer Retexture (instead of Connary's, if you like)
Texture Fix 1.8, and
Bloodmoon texture fix. Just read the description.
Ring Texture Fix. There is no reason why you wouldn't want to use this.
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That's it for the world/item replacers. For faces I use
Vvardenfell Visages. It's pluginless (no esp) too. For bodies use Better Bodies like Abramul said.
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Another nice mod:
Ownership Indicator. It makes the crosshair red when you look at an object that is owned by someone else. Requires Morrowind Graphics Extender.
I will add more to the list tomorrow if I think of anything else.