I fear we have very different minmaxing targets.It's a bonus action, so why wouldn't you be able to use it with weapons? I make all my greatsword attacks at 2d6+Str and then get a bonus attack for 1d6+Str. Useless on a monk, but great for any greatweapon or sword and board combatant.
The goal for any greatweapon wielder (I know of) is to be able to use your actual greatweapon (complete with any boons such as greatweapon fighting weapon style, bonuses from your weapon being magical etc) on every attack, including the bonus attack.
Yes, as written Iron Fists is a pure ribbon ability. It lets you do damage in cases where you'd otherwise wouldn't, such as a barroom brawl between Fighters where nobody draws a real weapon. It is completely eclipsed by actual class features, however. What you get is essentially the level 1 monk ability, which nobody needs (not even at level 1, assuming you have a weapon - any weapon - at your disposal as a Fighter).The WFJ ability actually IS garbage because it takes an action to use. Free bonus action attacks are potentially great though.
As I said, the only way to make sense of it is to treat the Envoy as the luxury model. The only reason why you'd ever play a Juggernaut is if you aren't free to choose the Envoy.You get a skill, a built-in tool, AND double prof bonus on using that tool. Compare that to a useless unarmed attack and a extra carrying capacity and the envoy is definitely better.
Well, it doesn't get anything too useful. (+5 Speed is not nothing. Would have been better if other Warforged were "slow" = 25 Speed)The skirmisher is a ridiculously bad though.
But does that make it "ridiculously bad"? I don't think so - it's still a Warforged, with Darkwood core protection.
Per this analysis light armor is actually the best integrated protection mode in that it brings Rogues up to Monk/Barbarian standard:
You wouldn't want to pick Juggernaut for a Dex character. That Envoy is probably still better is just ¯\_(ツ)_/¯
A Changeling Druid turning into something large and then... turning into something else large, doesn't scream "abuse" to me.Wildshape. It's not really that much of an abuse since you don't gain the stats, but you could turn into something large and masquerade as something that's not a large animal.
I thought you were talking about assuming a huge form, perhaps to grapple gargantuan beasts (which would be... if not broken, at least unique) which explains my comment "changelings can't increase in size".