How to disable Clear EIN???

Is it possible for administrators to disable the "Clear" button in the Set EIN command? This button has the potential to really mess things up and I don't want to have to send out a "Don't press this button" message to all users. Examples of issues:

Example 1, pictured below:

1. User sets EIN on rev A

2. User creates rev B.

3. User clears EIN

4. User cannot request new EIN (Different EIN disallowed on objects in the same revision chain)

Example 2:

1.  Use EIN with Business Logic using counters

2. User sets EIN.

3. User clears EIN

4. Counter value has been lost (This is a less serious issue than example 1, but may still warrant backend modification)