The DMU's are a travesty. They're good for runs like Celbridge or even Dundalk. But compared to the Mk3's they lose. They are loud (since they're a bus diesel engine and an automatic transmission) and uncomfortable. The internal styling seems to go for big curves and it looks to be honest like a public toilet on wheels.
I don't buy the scripted announcements thing (or even the automatic ones). The real human-being ones do add a personal touch. Let's keep them!