To get instructing paid properly, it needs to be seen as a career in itself, rather than a stepping stone. This will never happen with most fATPL holders, why? Because they have spent many many thousands of pounds to become an airline pilot, rather than an FI.
Someone who is desperate to get a foot on the ladder is more likely to accept being taken advantage of, for proof of this, just look at F/O's in Ryanair and other places that insist on people paying for ratings. They are willing to be shafted just to get some experience.
There should be nothing to stop someone who holds an fATPL from becoming an FI, some make excellent instructors, but we need to keep this industry ticking over as the schools and students require, rather than at the whims of airline recruitment.
The chaos that is caused by FI's leaving has to be seen to be believed and with the current rate of recruitment, we are starting to see a real shortage of instructors, both experienced and inexperienced.
I don't want to put fATPL's out of work, I was one once and I hope I did a good job, but when the call to go to an airline came, I didn't think twice and was gone within a couple of days, leaving massive holes in the schedule and gaps in people's subsequent training.
I'm not proud of it, but what else could I have done when I got the call and was told I was starting a type course on the Monday? (That was on a Friday afternoon.)
As a CFI the most important thing to me is the quality of training we provide and to be honest I couldn't give two hoots what licence any of my FI's have as long as they teach to the highest standard. I never want to see a time where FI's cannot get paid. That would defeat the whole purpose to me.
This debate is not as simple as just removing the need to have a CPL to get paid. I have laid out my opinion which I think would be best for the industry as a whole, not just for FI's looking for the first step along the career path.