There is a 'requirement' for an armoured fire support vehicle as part of Land 400, but personally I think it is unlikely to be funded. A tank can do everything an MGS-type vehicle can do, but the reverse isn't true. If you need fire support in the assault, just bring a tank.
The ASLAV is a cavalry vehicle, not a vehicle to lift the infantry like the M-113 was/is. There is no need for an FSV/MRV type vehicle for the ASLAV, as the M-242 chain gun is a far better weapon system than either vehicle carried.
Though it is true a tank does the job best the reason we see so many 'FSV's in historical wars is that tanks aren't always avaliable to everyone who might benifit from fire support under armour.
We need to recognise war time and peace time see different priorities. There is plenty of resources and personel during a war and a clear need for such fire support under armour, so they get improvised in the field.
In peace time, money and personel are not so freely avavlible and priorities will see such things a FSV's and tank destroyers being packed up, scraped, etc as resources won't strech far enough to maintain these sorts of perephial support systems.
WWII is full of examples of improvised FSV's and tank destoryers, but a more recent example of this process of improvising is the Humvee in Iraq. These patrol vechicals got more passive protection and more firepower in response to real combat conditions. In peace we can expect all this to vanish as resources are reduced and fouced on more demanding programs.
120mm SP mortors were mentioned and these fall into the same catagory. In a long bitter war, it is useful to have organic artillary for those times when support is busy elsewhere or not fast enough. But in peace time, the resources aren't there for every little weapon system that might come in handy at some point.
Ok, I haven't been on here for awhile, but the news about the SP artillary program being scraped bought me back to find out what you guys think. Seems to me that deployed towed artillary is so vurnerable in hight tech war as to be not worth bringing. The little towed systems, the 105mm we have, are worth keeping though. There are places were everything has to be flown in or man handled in and those light guns really come into their own when they are the only artillary around. In our region there are examples of that sort of terrain and it would be silly to throw them out. But, should we be asked again by the UN to send land forces to where ever, SP armoured artillary would be essential to that task force.
Seems to me cancelling that program is a bit short sighted.