It's quite fantastic, really, I've played a couple of modules with it now. It's more pertinent to ranged characters and mages, obviously, but it can be occasionally handy to frontliners too so you can focus fire. And after twenty years of NWN, I might finally see the potential in making glass canon mages. The tech works reasonably well and across the board, henchmen tend to follow instructions most of the time, though the AI can still reprioritise targets on a turn-by-turn basis after engaging, as always. And if you want to move your henchman ahead of you, you might wanna issue a Stand Your Ground order first, or they'll return to you right afterwards.
But I can't oversell it, if you're playing NWN EE without this thing enabled, you're missing out. And if you're still on the DE, this feature really is worth the plunge - you might not use it all the time, but when you need it, it's golden.
P.S. Beamdog, if you're reading, this is your killer feature right here, a prime USP for the EE. Don't let it languish in the config file, put it in the game's Options and feature it prominently! The control scheme can stay as-is, with CTRL and Shift, just make sure the option's widely visible to new players because it makes a huge difference for the better.