Out of curiosity, what you're missing at Digital Ocean? It seems it has all the basics (VMs, managed DBs, storage, load balancers) and for a better price than the bigger clouds.

I find it quite easy to mix services from multiple providers. For example add SQS or S3 from Amazon and Elasticsearch from elastic.co if your cloud doesn't have the products. The latency kills mostly just the connection from a web app to its database.

The biggest drawback is multiple invoices, but I think it's manageable.