Well, you definitely got your anti-personell weaponry down. I would go with another 3 las cannons. You'll really be wishing you had em when you're staring across the field at a monolith/hive tyrant/carnifex/land raider/terminator. Never hurts to have more AP 2 weaponry laying around.
In 2000 points I take 3 squads with 3 lascannons in each (because I love lascannons, and because its the favored heavy weapon of Mordians). Your leman russ's, basilisk, griffon mortar, hellhound, and heavy bolter squad will be able to take care of most troops, but they wont do much against hive tryants, and you may even be hard pressed to kill terminators.
Now, if you have a lot of lascannons in your basic guard squads already, then I would suggest taking them out and puting them in their own squad by themselves, and then adding some heavy bolters or autocannons to the basic squad. People say its risky to take heavy weapons squads, and it is, but if you protect them enough, then they will REALLY pay off. One huge advantage of having a heavy weapons support squad with 3 cannons is that you wont waste 8 lasgun shots at a land raider when you fire your basic infantry squad's ONE las cannon. It's very important to group your weapons fire when playing IG.
In 2000 points I take 3 squads with 3 lascannons in each (because I love lascannons, and because its the favored heavy weapon of Mordians). Your leman russ's, basilisk, griffon mortar, hellhound, and heavy bolter squad will be able to take care of most troops, but they wont do much against hive tryants, and you may even be hard pressed to kill terminators.
Now, if you have a lot of lascannons in your basic guard squads already, then I would suggest taking them out and puting them in their own squad by themselves, and then adding some heavy bolters or autocannons to the basic squad. People say its risky to take heavy weapons squads, and it is, but if you protect them enough, then they will REALLY pay off. One huge advantage of having a heavy weapons support squad with 3 cannons is that you wont waste 8 lasgun shots at a land raider when you fire your basic infantry squad's ONE las cannon. It's very important to group your weapons fire when playing IG.