Hi Everett
Israel stamps, for the most part, are printed in small sheets. Corner copies therefore do not have any more value than regular tabbed singles.
The early definitive sets may be an exception to the rule, but only slightly so.
However, corner examples can have a personal attraction, whichever country they are from.
If you don't need to take the side margin off, then I would say leave it where it is. Of course it does look odd if the rest of the set are not corner copies, and there is your decision !

Hope this helps a little
Londonbus1