Create a pre-installed image for marketplace like Cloudways
I have just switched from DigitalOcean to Cloudways due too their extremly fast recipe with Varnish + Apache + Nginx (https://www.cloudways.com/blog/wordpress-nginx-with-apache/) - and it increased my server by 300% despite running on a 4 core general purpose server.
I wish there was a one-click readymade image from Marketplace that I could use to deploy a similar setup. I think this could retain a lot of Cloudways customers as well.
Just a “big idea” to throw out there; I think there is a huge market for it.