Yes, you would need to register to see some things and I was going to suggest that so you can give your input. Just keep in mind that a lot of things are not completed or even have been worked on yet like the admin section.
Curves2 is a pita! They've condensed a lot of the classes together. So, when you edit one thing it does the same for the others that are grouped with it.

That mean you'd have to figure out the differences and separate them to make a specific thing work! I'm not good with this like Maxx and Jeff so I have to learn my way through this while they are constantly changing/upgrading the code.
But I have been learning a lot.
EDIT: For instance, look at the differences between the footers in these two versions. The first is the original. The 2nd is the new version. Which do you think is better?
https://skhilled.com/smftest/index.phpThe new one:
https://skhilled.com/rc2/index.php