Agree re decals.
To me its totally pointless and in the end is grief if you want to sell your bass.
For a start, whats on the headstock means sod all to most your audience. Those in the audience that would recognise the Fender name would also recognise the fact its NOT a Fender instrument, its a Squier, so whole process is pointless.
People that do this are just wanting to kid themselves they have a brand which they dont. What other household item/possession would you do this too?
As I say, when it comes to selling, you have a dilemma. Most buyers dont want an altered bass, do they??