Agree with the principle of the more hours the better. So how would it work for an aspiring career instructor then? Say gets CPL & FI and has 200 TT. Where/how does the other 800 hours come from? Would they have to pay for it themselves and, if so, is that a realistic requirement for a job with a starting salary of £12-15k?
The answer is simple.
Before one can be a flight instructor he/she must have xx number of hours as a commercial pilot.
Instead of 200 hours make it 2000 hours.