4096 characters would fit very nice in terms of our usual build messages we want to display.
I can, and probably will do just that until/unless you extend the 1024 characters limitation 
In general, Since our main issues arise from the decoupling of FinalBuilder 8 from FinalBuilder Server, and having to run under Continua CI Instead - I would propose a general solution that allows the usage of custom variables (as these can be set by FinalBuilder) as fields.