Currently there is no official way to deploy a monorepo to render. there is work arounds but on each commit all the other services will register that and rebuild even when not modified.
High Availability for PostgreSQL
Automatically promote the read replica when the primary instance is down.  https://feedback.render.com/features/p/read-replicas-for-postgresql
GitHub Deployments Integration
Call GitHub Deployments API automatically after a Render deployment is started, canceled, successful, etc. It would be really useful to see all the currently running environments on GitHub with all the details: environment url log url deployment details date & time of deployment commit deployed etc.
More analytics & usage metrics
It would be nice to have more detail analytics about usage of service. Requests: The number of requests a Deployments have received. Built time: The amount of time Deployments have spent being building. No. of build: How many times a build was issued for one of your Deployments.
Warn when disk usage reaches threshold
Last night one of our services failed because its disk got full. It would be nice to get a warning when disk usage reaches set threshold.
I want Redis to be supported like Postgres. I don't want to think about restarts, health checks, or ensuring the service is running. I don't want to mess with the config to make it fast.
Ability to SSH into instances
As I currently understand it, the only way to access a shell is through the online shell. Being able to SSH in would be useful for: Easy of use. I'm familiar with how my shell works, but in the online shell, it seems like some things don't work (eg navigating with the arrow keys or tab completion). Debugging. I sometimes want to copy over a file (eg an output or log) to analyze locally, or upload some seed data. Testing new code. One of our use cases is a dev server where we can experiment with code changes live (and on a machine that has all the dependencies installed, etc). We currently have an EC2 instance set up for this, and we'd love to replace it. With true ssh, you can properly edit things on a remote host.
Multi region support for apps
It would be great to have a way to host apps that are deployed in multiple regions, so the app is fast anywhere in the world. I guess this is quite a challenge, because you might also need a multi-region distributed database. But it would be great to have an easy way of building such an app without the dev-ops overhead.