I for my part would be happy to "be forced" to keep the German licence, why spend 1000€ to convert to some
irish IAA who will make your life harder and charge ridiculous prices for that on top?
Praise the German data protection laws which prevent the Irish sharks from making pilots life more miserable than they do already. Under EASA a licence conversion should not be necessary in the first place to work in the EU.
All your Irish employer needs to do is have some TREs qualify themselves to know how to fill out the standardised German forms and do the check. And guess what. They need pilots so they do it. Doesnt even cost them a cent.
That is a much better solution than you begging for hundrets of German pilots to give more of their below-market-value-salary for paying even more fees out of their own pockets which would normally be covered by the Employer