I actually kinda like the alternate button designs. However I agree that they could be too busy. Maybe in general you could shrink down the buttons a bit vertically, they just seem a little bulky for a mostly tiny site. Maybe you should try to work your buttons with the style of the site moreso than just a simple gradient to black. Try some interesting shapes or something similar to what fills the rest of the site. I think the animations you have in mind for the buttons are smooth and work pretty well. The only one I don’t really like is the zoom one.
Definitely don’t re-make the site, it looks great besides the buttons.
Also, the intro is looking pretty cool, I like how the logo comes in and glows like that
The thing about the menu items that I don’t like is the font and the overall bulky feel of them. Theya ren’t as slick and techy as the rest of the site.