Note that this is the Tornado-G, there are also the Tornado-U and -S models that are supposed to be introduced. These will obviously need the larger MZKT or BAZ trucks to carry the heavier Uragan and Smerch rockets in quickly replaceable pallets. Whether they will be used also to fire the 122mm Grad missile as well is another question.
For a mission that involves a target less than 30km distant that is armoured the Grad is the best.
The 2M217 122mm rocket with sensor fused submuntions carries 2 munitions out to 30km.
The 9N152 300mm rocket carries 5 submunitions.
With 12 tubes the Smerch carries 30 munitions, admittedly to be used at up to 90km, while the 40 tube 122mm Grad can launch 80 munitions per vehicle.
If you want to smother an armour staging area with guided submunitions then grad has its advantages.
BTW having read your post TheArmenian I agree that this is a good idea that makes a lot of sense.
With their drive for net centricity, and improved C4IR artillery in the Russian forces is about to go through a revolution...
Artillery has always been a focus for the Russian and Soviet military but it has rarely been a flexible tool, more a sledgehammer where a not precisely known target has the number of rounds fired in its direction calculated using a mathematical model to a certain level of destruction and is then attacked.
Now with sat nav for the launchers and rockets and UAVs giving targets in real time and other improvements that make artillery much more responsive and capable the Russian Army is going to be much more formidible.