Why do none of these mods you've posted include screenshots to show the difference in the textures? That would go a LONG way in getting more people to use them.
Also, keep in mind that the larger the textures the more video ram people will need to use them, and with the number of these you have done already, I would imagine most people would have to only pick a couple they want.

I haven't added any screenshots yet because I just haven't found the time. I plan to make screenshots this weekend.

Regarding your second point, I'm thinking of making the mods in the modpacks optional, so people can choose what they want to use.

Comparison images are now available for all my mods.