Parallel install/update using Vim 8's jobs feature.
Everything Vim-plug does
You can even use plugpac(a wrapper to give a vim-plug experience) and it's basically a drop in replacement (just replace Plug with Pack)
from plugpac.vim's overview
Plugpac is a thin wrapper over minpac, leveraging the power of Vim8(and Neovim) > native package manager and jobs feature. It's even faster than vim-plug.
In my case, it takes 18ms to start up with 53 out 87 plugins loaded(the rest will be load on demand). While vim-plug takes 35ms.
Obviously for their use case it's not a huge improvement but it is still a very easy implement improvement.
I know everyone has their own favorite plugin manger but please hear me out.
Minipac features
You can even use plugpac(a wrapper to give a vim-plug experience) and it's basically a drop in replacement (just replace Plug with Pack)
from plugpac.vim's overview
Obviously for their use case it's not a huge improvement but it is still a very easy implement improvement.