Often when modelling I use shift + h so that I can limit the edit mode modifications to just a certain part of the mesh, like when I’m using proportional editing for example. The only problem is, quite often I need to be able to see the hidden parts, so that I can make sure eveything is lining up properly.
I propose that pressing ctrl + shift + h will ghost the geometry you want to be unaffected rather than hiding it. This way you won’t be working blind.