I'm planning to build a multi-stage effect and I have questions about buffers and power sections.

So I want to build something that combines compression, aliasing/bitcrushing, modulation, and a filter. Some of this will involve signal splitting and blending. Many of the layouts and schematics I find have a buffer stage. I know I should include some amplification for splits and blends but do I need to include the input buffers that may be present on each stage or can I omit them? Can power conditioning be done once for multiple circuits? Considering that space will be an issue with such a design, I would like to have a better idea of what I can consolidate.