Leadbelchers: A price drop to 43 points means no matter what they're worth a consideration, even if we're just comparing them to ironguts. The new Leadbelchers are a bit different, a bit similar and hopefully a bit better.
They come as basic ogre bulls with leadbelcher cannons and light armour. The cannons themselves are redesigned; slow to fire, with D6 S4 hits that are armour piercing, as well as having the ability to move and fire without penalty, plus shoot at full distance. There's no more bad reloading rules to contend with anymore which means you have an actual, decent ranged option to go for now.
Full Command is still 10 points each which makes it always a decent choice, but a point of note is the Champion for Leadbelchers gets an extra attack, which is entirely pointless on a shooting unit.
Overall, Ogres needed a decent anti-infantry option and Leadbelchers can provide it. Being able to move and shoot at a long range without any of said penalties makes them mobile and able to reach out to smaller blocks. Anything without a 4+ or better armour save will be shredded, so they make excellent medium armour harassers.
All in all, nothing could be worse than the old leadbelchers. They will find a use in your army but this will be a case of questioning how good they are compared to other ranged blocks, as well as if you really need them. Weigh up the options and see if they fit in your army. In most cases, they'll find a place.