Back to basics though........... The Bren was made to be the master of all trades and all things to all men. But, alas, when it came to push and shove it didn't excel in the AA fire role, nor the fixed lines role nor any of the other things the designers and trials teams of the 30's wanted of it. Things such as the ill fated fixed lines, indirect fire role, overhead advance to contact fire were to side line the Vickers and 2" mortar but they never could. And while the tripod mounted Bren could be used like this, during military training doctrine and training lessons, these roles were casually preached but never practiced.
Where it did reign supreme until it was only bettered by the equally magnificent true jack-of-all-trades L7/GPMG, was as the section light machine gun. FIRED FROM THE BIPOD. If you have a bipod on your Bren, that's all you need. If you need a tripod, then let the big boys with their medium machine guns, the 2" and 3" mortars (ok..., 60 and 81mm's then) do the job - properly!
Just my opinion. Been there, done it..........