Modifying the Standard Customer and Standard Case Forms (or Defaults)

Hi All,

   I need some help with this one. As many of you know, I am work for a contact center. I have many companies within my NetSuite (e.g. Each company has a whole set a custom fields, forms, workflows, etc that ONLY that company uses). The problem is, each time I create a new custom field, sub tab, anything, it gets added to the Standard Customer form (if its an entity item) or the Standard Case Form (if it's a CRM item).

     NetSuite appears to favor these standard forms for things like Online Case Form submissions, etc. Is there any way to modify the Standard Case (or customer) form itself to eliminate what fields are displayed on these standard forms? If not, is there a way to change the Global DEFAULT standard forms that NetSuite defaults to? As an example, my standard case form has over 265 fields on it. You can see how this can get messy.