Some overview drawings are made at such small scales, that grid heads become unnecessary big. IIt could be a handy feature, if one could have the possibility to define a different Grid Head Symbol for Views coarser than a chosen scale.
Example:

Proposed new Type Parameters for Grids:
- Tickbox: Different symbol at views coarser than...
- Drop-down menu: Choose View Scale
- Drop-down menu: Choose Grid Symbol (for the coarse views)