Well ... AQ
could be. The E-190/195 series seems to be a good fit with their inter-island ops.
An alternative is re-engining the 732s with the PW6000, which P&W could revive that project, according to a source.
I don't think they will get anything smaller. I have a feeling they might keep a few 732Cs for their cargo ops though.
"The best use of your life will be to so live your life, that the use of your life will outlive your life" -- D Severn