Welp I think that wand shown solidifies the fact that minion builds are going to be the "jesus this is OP" build of the league. Lvl 30+ zombies/spectres here we come!
The unique dagger was already +3 to physical spells which affected a few summons, most notably HoA which was already OP as all fuck. These wands are gonna be pretty nuts for other summons(besides spectres) though for sure, the fact they can also roll other minion mods is pretty big, you're gonna get some fucking stupid shit going I think, and obviously you can dual wield them, although getting victario's charity in the shield slot will probably be way better than another wand unless you have another way to give minion charges, cause minion charges are fucking stupid. If they rework/buff some of the minion uniques though you'll have a fair competition for a bunch of them. Midnight Bargain, Queen's Escape, obviously Dancing Duo if you want to go this way, Soulwrest, Clayshapers etc, there's already quite a lot of good minion weapons. Mostly I feel this is just going to replace the Temple rares with 90%increased damage and attack speed.
Once cool thing about the new supports is you can put defensive on AG to keep it close to you, and give it Kingmaker so you have perma fortify. You kinda "lose" the crit multi aura part but not a big deal and you can still cull shit yourself with ball lightning/storm brand/whatever you end up using.
That said I wouldn't sleep on the assassin rework. Viper Strike after the melee "buffs" was actually really potent when I tried it, I saw Mathil made a build after I quit playing mine too(different build but still). If they add a skill that feels great to aoe with(unlike meleesplash viper), poison might be fairly meta again, since viper strike melts bosses and agony is getting changed/buffed to go with the assassin crit focus, so crit poisons will skyrocket the damage probably. And the builds tend to be fairly low investment, your weapons are fossil crafted for cheap(well they were cheap when I did mine), literally just need to roll chance to double poison and attack speed on them(and I guess critical strike/crit multi now but still) and a bunch of the other items are common uniques, plus you can do the 2 skill setup fairly easily by using 5L Embalmer gloves and your main 6L(7L if you want to go high damage/low defenses using Dendrobate).