Maybe what's needed is a slightly down-spec'd T2, without all the weapons simulation gubbins and other operational training stuff?
Than again, you would need to have enough to cover attrition, and the basic Hawk design is getting long in the tooth anyway - maybe BAE need a new design to compete with the US TX contenders, AA M346 etc - on a 2030 OOS timescale, they might just be able to do that!
Whilst on the subject of the M346, it's interesting that the Italians are replacing the Frecce MB339s with M345s instead of M346s