Davidhs
Be realistic, a broad Geordie, Scouse, Brummie or West Country accent is not going to help any student in their working career. There is nothing wrong with regional influence but you do need to be understandable if you are going to need to communicate effectively.
I get really frustrated with having to deal with Indian call centers that are speaking English in a completely different way, many broad British accents are not much better.
This isn’t about broad accents - it’s about regional accents. I’ve got one and when I moved down South I get fed up of comments about it. I just started commenting on their accents and saying how incredibly provincial I found the south. My dd went to Newcastle University ( with her nice Southern accent) so wasn’t teased by the Rahs- of which there were a fair few. She said the most amazing thing about them was their self confidence given how mediocre so many of them were quite frankly. When we first moved to Surrey she was 3. On an early visit to the deli counter at WR, after hearing a naice Surrey lady place her order, she asked me in that lovely clear as a bell piercing voice little children have why the lady couldn’t talk properly ( but more importantly) why she hadn’t said please.