I agree with flog, except, 1000 hrs +
1000 hrs of what??
I would suggest 500 hrs with NVFR and/or PIFR and/or Aeros and/or Tailwheel etc is a better level of experience than 1000 hrs of 2 hrs cross countries.
I think an Emergency Manouvres Course like the one taught by Phil Unicomb at
Action Aerobatics or similar (like Red Baron) should be a must for ANY instructor.
But, if you are going to apply an hour limit, do you apply it to CPLs??? (if not why not??)
I think 500 + EMT or Aeros plus the instructor course should do it.