[USER=6704184]@doctorbadwolf ,
@TwoSix , I see your thumbs up! Thanks! Any observations to share?
I love the structure and basic ideas of the class, first of all. I do have various concerns, however.
Battlefield Insight has too many "if, then" clauses required for it to do anything. I'd either
*make it so that you apply insight dice regardless of hit or miss, and/or make the dice only be spent if you hit (or the ally decides whether to use the dice after hitting)
or
*raise the die up to at least a d10
Remember that the rogue is dealing that damage, on top of a lot of other really strong abilities, simply by hitting at least once per turn. Your insight dice are...much less likely to get used, than the rogues sneak attack dice. One die step is a very small difference comparatively. At level 20, you're talking about a difference of ~10 damage, on average.
You also aren't as often actually adding that many dice to an individual round of damage dealing.
Shouts and Signals are interesting. Why not have a clause that you can put Insight Dice on a target if they are targeted by an attack granted to an ally by you? Or perhaps just say, you can use Battlefield Insight on a target you can see within X feet whenever you take the Attack Action. That way, regardless of what you do with your Attack Action, you can be applying the core ability of the class. Especially since Signals require Insight Dice to even use.
Right now, Shouts and Signals work directly against eachother until level 5. That is really the main thing that would make me reluctant to play this class, as it is. I don't want my core class features to be mutually exclusive.
If the int requirement of Signals there for balance, or flavor? Because IRL a dog could probably be taught these things and in dnd said dog would have an int of 3 or something. Maybe require an extra hour per signal for int below 6? Or an animal handling check or the help of a character who the animal trusts and takes commands from?
Some of the signals, like pin the legs, are going to be confusing for a lot of players. Is the idea for the class to be "advanced", with a steeper learning curve than other 5e classes? If not, maybe it should just cost 1 die, halve their speed or deny them the ability to disengage, and allow you to spend more insight dice later on to hinder them further or continue the effect. Also, a lot of these should require a save. Without that, they're more powerful than a lot of battlemaster maneuvers.
I'm not sure the balance works out of allowing someone to draw and use an object as a reaction having no cost beyond your bonus action.
Why No Synergy With Casters? I know this was an item of contention in my own marshal thread, but it just makes no sense to me that such a character would not no idea, unless utterly specialised in doing so, how to get more out of the spellcasters around them. Strike! could easily allow an extra spell attack that deals 1 of the same die of the same damage type if the ally casts a cantrip that requires an attack roll, for instance.
Or, a shout that simply increases the chance to hit and the damage of the ally's next attack, and don't specify attack action or weapon attack.
The rest looks good, but I'm not as worried about anything above level 5 or 6 in a class.