Are you talking about Drafting or when working in the Sketcher or are you displaying the grid even when just in Modeling? Actually, it doesn't make much difference as the issues are the same for all situations.
There is nothing that you can do to make the grid 'points' look larger. The best that you can do is make sure that you have as much contrast as possible between the color used for the grid as opposed to the background. If you have a dark background when make the grid White (color #1). If you have a light background then make the grid Black (color #216). That's about all the control that you have.
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA Siemens PLM: UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.