I can't see from your question exactly what you are trying to acheive and what I am suggesting might not be what you are looking for but a forum is all about sharing isn't it?
When I have done the creation of a logo previously, I did it fully within the part using a sketch block and inserting this into sketch, then using the Wrap feature to "Emboss" as a feature in the part. You could have several blocks in the different sizes you needed in the Design Library to drag into a sketch
Another way is to create that logo in a part (multiple bodies or single), then insert that logo part into a part use the Combine feature to remove or add the material. You could use configurations of that logo whether it was the part into part or part into assembly process you are using.
For the option of varying the size, you could also use the Scale feature if you knew the scale.
A similar forum is listed here: https://forum.solidworks.com/message/62847#62847
Thanks very much. I made copies of the part and then went Inset-->Features-->Scale.