YEah, hybrid implants won't use a standard length electrode array so you will also not qualify if you have progressive hearing loss (because if your low frequency hearing declines, you won't be able to use the hearing aid portion and the electrode won't cover the low frequency area of the cochlea).
Ideally, to use a hybrid implant, one would have profound hearing loss above 2000hZ and ~70-80dB hearing loss with good resolution in the low frequencies.
So, a small but significant portion of people will be able to use them, many won't.
This won't loosen the qualifications for a traditional CI because if you benefit from hearing aids, trust me, you want to keep any natural hearing you have.
My natural hearing was totally destroyed but I only had a few decibels to begin with. If you have thresholds in the 60-90 range, and do well with hearing aids, hold off on trying to get a CI. 1. 60-90dB isn't in candidate territory and 2. if you do well with hearing aids, why destroy what you have?
The CI has been amazing for me but my definition of "doing well" with UP hearing aids was "I can still understand 6% of the words in sentences at 110dB! that is AWESOME! and with my hearing aids, I can almost hear something that is 70dB!"
That is not "doing well"