yes, there will be a chronic shortage of pilots in the region. in fact, there already is by the looks of the workloads out there now, captains rostered with captains etc.
unfortunately, there is simply not enough local qualified pilots to take the positions. there will probably be inadequate supplies from the international pool as well of experienced pilots.
in the region, retaining pilots by raising basic salaryies is a knee jerk REACTION only after so many resign to go where packages and t & c's are better. this has been a futile exercise as ridiculous inflation and a weak US dollar continually wears down the 'send home' pay for most expats.
there is a LOT of poaching, especially by airlines who want their nationals back home ie omanair poaching gulfair.
there's emirates, etihad and qatar airways who buy planes faster than they are able to provide pilots for. planes are getting grounded by qatar and etihad because of inadequate crewing. emirates should follow soon.
gulfair has a 'bahrainisation' push which they can ill afford. it only serves to make gulfair an unattractive place for expats pilots to work.
probably the biggest factor apart from remuneration, is the lack of 'voice and muscle' by pilots locals and expats alike, in most of these airlines.