With no offence to incoming controllers from Shannon, Sweden, London Mil or wherever, I'm assuming that it is NATS' intention to somehow "fast track" previously-qualified controllers through the validation process.
If Prospect is doing its job properly in representing the interests of those "normal" trainees currently holding at various places in the system, it cannot allow such queue-jumping to occur. These people already have to go through a training process over many years, never knowing until the last whether they actually have a long-term job, and any further delay is unacceptable, as well as counter-productive as it reduces their chances of ultimate success.
Perhaps somebody can tell us the Prospect position on the issue, as the news of a document circulating in Ireland means it is no longer a hypothetical discussion. If there is no policy in place yet, we should badger our reps to force a debate and decision on the issue.