Banner of Command vs Locket of Iron Solari

So a while back, the devs asked for our opinion on the banner of command item, and I have been using it often on my caster supports, and from what I discovered, despite being more cost effective, the active pales in comparison to the lockets active unless you have baron buff. But then the primary benefit is largely from the magic immune super ranged cannon and less so the stats it gives.

However, I have found some use for it on baron buffed melee against other champions if I can sneak one in mid fight.

With that said, I have never, ever found a reason to use it on caster minions, so if we are going to give it some love I think we should start there. Given that it's usefulness is lackluster without baron buff I suggest a benefit that doesn't require that buff.

My recommendation is to give the caster a major hp regeneration (150-250%) and minor damage reduction (15-20%) bonus to minions in a 900 radius (enough to cover the whole wave), and any time a minion from within that aura kills another unit, the user(s) of the device get gold for it. (In the odd case there is more than one person on the team with it)

This would let the user of the device provide a strong split push that if not dealt with will swallow the lanes towers. Basically you are trading the active of boosted team fighting from the locket shield for boosted team fighting from more members if properly timed. Plus, since the banner in effect takes away team gold from the greater push, this would help alleviate that concern.

It would be nice to see a minor on hit slow or speed boost to melee minions targeting champions as well, but perhaps that's wishful thinking.