Considering the first remark of @Simonrazer seems point on “How to organize spaghetti ?”
If it can help you, I think that you have to ask yourself some usuals simple Software Architect questions like thereafter
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Do I start redesiging/rewriting everything/refactoring ?
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Where to start ?
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How to start it ?
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What to change in first ?
With 1, for example, I think that you have to consider in first some simple points like :
- the behavior of the whole application is it well understood ?
- Is the spaghettis tangled in a large loop or in sub nodes paquets?
- Do my traits have a high cohesion ?
- Is it a question of performance or testability ?
This kind of approach for example could be inspring for a new Architecture design tool with Nodes in Armory. https://flowhub.io/