Wader. You can't pick these things up and use them, because they go off when you do.
General points:
They are not area denial weapons in the same way that the German MW-1 or HB876 was. They are anti-armour weapons.
Also, the use of these things is not illegal - they are not mines because they are not designed to be 'victim initiated'. Technically, they are no less discriminate that the fragmantation you get from a GP bomb - that goes wherever it wants within its own ballistic capability.
I'd love to see their continued use, with a mod so that they self desctuct or dud safe or something, but that's alot of work/money.
PBA - you're right, you can use a CBU for alot more things than you can a Brimstone.