I rebuilt the core architecture before launch instead of adding new features

Over the last few days, I realized the biggest risk wasn't missing one more feature—it was shipping something difficult to maintain.

So instead of adding more capabilities, I rebuilt the foundation of LeadRadar AI.

The main changes:

Centralized configuration in a single node
Dynamic Reddit search generation
Standardized data normalization
More resilient JSON parsing
Cleaner Airtable structure
Better separation between collection, qualification, and response generation

This doesn't make the product look dramatically different from the outside, but it makes it much easier to install, customize, and maintain.

I'm trying to optimize for the experience of the person importing the workflow for the first time, not just for myself as the builder.

Question

If you've launched developer tools or automation templates before, what last-minute architectural decision had the biggest impact on your product?