For me just 2 things:
- make it modular, so i can turn off modules that i do not use. Some small mobile game does not need all those fancy VR rendering etc systems.
- make development “double step”, one major version for adding new things, next one major version (give them engine devs 3 months) only fixing bugs, polishing existing systems. This will give some “breathing room” for all marketplace creators (maintaining all assets, updating them, while they sell almost nothing) , and indies that are always tempted by new cool things
oh and this:
Yes some scripting that is text based and has same functions as most of blueprints nodes (same names and same parameters, so code can be ported easily without much thinking). Maintaining 20 screens of code in blueprint is only comparable to coding in java script hell.