Summary from Most Wanted Features for Meteor (with some updates from here):
- 2FA
- Improve APM
- Cheaper tear for hobbyists and possibly a free tier (could be tied with MongoDB Atlas free tier)
- Speed-ups
- APM should be its own product for non-Galaxy apps
- APM improvements
- More regions and hosting options (add Azure and Google)
- Firewall
- Ngix access
- Allow changing meteor settings
- HIPAA tier
- MongoDB addon
- Free or cheaper tier for hobby projects
Personally I think 2 factor authentication should be #1 priority (possibly update to Meteor accounts?). Following that I think it would be realistic to focus on APM and metrics improvements and/or addons for Galaxy to bring additional revenue.
Personally for me I would like to also see more hosting options and regions with regional management along the lines of MongoDB Atlas with one deploy command and central management.