Certainly, the current board software (althought functional) is lacking important features, specially when it comes to security. It'd be a good idea to install a new software and migrate the DB, not only for users sake, but, as you said, to save you from doing boring-repetitive tasks.
Someone previously said that fancyness is not the main virtue and I agree with that. A fast, functional, intuitive one is preferred and then it's great if it offers options to customize etc
Having tried many cms and forum softwares I sum up to the ones recommending SMF. At first you'll find configuration options a bit overwhelming, as if you were managing a commercial product like vbulletin, but at the end you're provided with much more power.
On the other hand, PHPBB3 can be configured steadily as it doesn't have even half of smf's options. I also think smf is more efficient consulting the DB.
Said that I'd conclude that SMF is the best open source solution, specially for the long run. Maybe wait for the stable 2.0 branch? That's what I'm doing, I think