They should be dangerous. Right now they just pull you out of supercruise and then heat your ship up. That's just disappointing. I've already posted about this in the general discussion and it sparked a 9 page discussion on the subject; however, I want to be sure that this suggestion is put into the proper place for the developers to notice it, which seems to be here in the suggestions subforum. Here's the original thread, where many players have shown support for this: https://forums.frontier.co.uk/threads/black-holes-should-kill-you-if-you-fly-into-them.566355/
Here's a video of what happens when a star gets too close to a black hole:

Here's a video of what happens when a star gets too close to a black hole:
