Verisium and offscreen monsters coming in

It's annoying when you start channeling a verisium deposit, then some monsters from offscreen come in and start attacking you; since you've started channeling the thing will activate, but since you have to stop in order to fend off the monsters it'll barely have any filling. Even if I try to just tank for a bit and keep channeling, I get stunned or something that breaks the channel.

While I will of course be more careful; it'd also be good to have a wider no-monster zone around it, just as some other mechanics are set with a good sizeable no monster radius to ensure they don't interfere with you trying to use it.

Clear the area around it first, maybe