My understanding is that if you are 'frozen' due training bond the you don't have a dog in the race and someone junior to you can and will trump you. This applies to all pilots.
In 2010, GFC displaced pilots on the Ejet had new hires come in directly onto the 737. That was a different EBA and era. Within 6-12 months I think most ended up back on the 737 if they wished to go to it.
I don't think there is much point in an us and them type thread as it's not reality on the line, were all the same.
I suspect most ATR pilots will indeed get their chance at the 73. Tiger and VANZ are losing pilots and most VAA guys aren't interested so you might find yourself in a good position sooner than you might think.
Having said that, you have to wonder why the ATR is being kept given all the issues and for such a small fleet.
All the best.