Besides getting jammed into Salesforce, it seems like adding data warehousing, job queueing (besides basic Redis), and better metric support onto Heroku are common growth pains for startups.
Cursory glance: pricing seems reasonable. That's probably going to be a tiny fraction of whatever you're going to pay the engineer(s) who use it, anyway
My main issue with DO is their free/low-cost postgres and redis storage is more expensive than Heroku.
Northflank appears to be slightly cheaper than Heroku across everything, but its not really worth the squeeze to save $5-10/mo.
If I ever grow out of Heroku, DO's 1GB RAM for $5/mo is way cheaper. In theory, I could host my own redis for $5/mo at 1GB too. I wouldn't trust myself to self-managed a DB though.
Whether it's API support, collaborating in real-time, or scheduling cron jobs we're working hard to make PaaS much more powerful.
Other than more queues & metrics what would you like to see in a high-level PaaS?