bring over only some features from this theme into the default-theme

[shirooo39]

I tried this theme but it looks extremely bad to my taste.
I loved the default-theme but is there a way to bring over some of the features from this theme into the default theme?
the things I needed the most are:

• auto blog post indexing
• pagination
• the ability to change the post folder instead of using _posts

the post index from this theme looks good but not so sure about the pagination as I haven't tried it yet.

here's how my default-theme looks like after I installed this theme which extends the default-theme.