FormerlyHemlock
Hero
I think the article elides over the biggest effect on combat -- at a table where players will appreciate having each round be more of a tactical challenge, this system will drastically increase the time to run combats, as players hash out what their optimal strategies should be. With experience and DM prodding, perhaps this extra combat time can be minimized ("let's just use Maneuver E"), but I'm not seeing it.
Having used similar systems in the past and present: combats where players have to declare actions up front are either (1) straightforward and fast, or (2) complex and engaging--they feel fast even when they turn out to have been long by wall clock time. There are few occasions where a player has to just sit around not being allowed to talk to the DM while they are waiting for their turn. (That only happens when one player is doing something simple, like just making GWM attacks every turn, while other players are doing something complicated like a stealth duel or spell duel.)