About stance progressions, no it does not seem odd to me. Of the three that you mention, two are 5-level PrCs and one doesn't progress maneuvers at all. Not granting stances over 5 levels is not absurd as, other than the Swordsage, the base classes rarely get a new stance every 5 levels, and even the 10-level PrCs usually only grant 1 stance over their levels (RKV being the exceptions). D&D does have a strong tendency to round things down, rather than up. Notably, however, these stance-less classes do grant stance-like abilities (Mountain Fortress Stance, Shifting (a bit of a stretch), and Eye of the Storm/Blood Rain).
About the Idiot Crusader, it comes from having more maneuvers readied to your Crusader progression than you have maneuvers known, thus putting you into the grey area of not being able to ready all of your maneuvers and, more importantly, bringing your functional maneuvers readied closer to your maneuvers granted on each reset. You can actually pull off the same mechanically acrobatics with Warblade and Swordsage progression, but you don't get anything for it. The simplest change to fix it is to change how the amount of granted maneuvers (both initially and after resetting) are defined. Instead of being a specific amount that is coincidentally 3 less than your normal allotment of readied maneuvers, actually define it at 3 fewer than your total readied Crusader maneuvers. That also makes adding extra readied/granted maneuvers from other sources really easy to define (you don't have to even mention the special case of Crusaders and granted maneuvers any more as changing the number readied automatically changes the number granted).
Bloodclaw Master
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Claws of the Beast also should apply the full Strength bonus to secondary natural attacks with TC weapons (ie: claws) if you're planning on letting Superior TWF work with Multiattack.
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Bloodstorm Blade
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BSB does not, as written, advance full IL. It lacks the text that other PrCs have indicating that you add your full PrC level to your IL.
How does Blade Storm not work? You make one attack against each of any number of opponents. Normally, you'd run out of thrown weapons after the first attack, but Lightning Ricochet takes care of that for you.
Oh, it's only a single attack, not one for each enemy. That's... strange. If I had to change it, I'd change it to letting you make one ranged attack with a thrown weapon against each enemy within range, similar to Whirlwind Attack letting you attack each enemy within your reach.
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Deepstone Sentinel
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Agreed on all counts except Dragon's Tooth. I kinda like it as is (permanent duration). Clarifying the interactions (if any) with existing structures may be a good idea.
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Eternal Blade
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Blade Guide should clarify what happens to it when it reappears. Does it still have as many hit points as before (ie: possibly less than 0)? What about spell effects that may be on it (I can suddenly imagine casting an aura-type effect on it and having it use that to damage enemies around corners, or casting Death Throes-type spells on it and "suiciding" it like an eternal Baneling).
Things without a limit on their uses usually have no limit on their uses. This is as true of Guided Strike as it is of Defensive Insight, Tactical Insight, at will abilities, Evasion, Uncanny Dodge, skill uses, etc.
Armored Uncanny Dodge's references to wearing armor are indeed erroneous and irrelevant. However, the ability should still be differentiated from the normal form of Uncanny Dodge as relies on the presence of your Blade Guide.
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Jade Phoenix Mage
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If by fix the skills you mean adding Spellcraft and some or all Knowledges (at least arcana, history, and religion), I agree.
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Master of Nine
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I might remove the "at the beginning of the day" part from Mastery of Nine. You can change your maneuvers readied throughout the day pretty easily, so the bonus should probably be either based on what you know (which is as good as how many you readied at the beginning and then changed to what you want) or how many you have readied (including expended and withheld) at the moment.
Dual Stance should clarify that the maneuvers need to be from different disciplines. It says it with the "from another discipline" part, but it's easy to miss.
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Ruby Knight Vindicator
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I just want to mention that Divine Impetus is so much better than the Swordsage's 20th level ability, Dual Boost.
I always figured that spending multiple uses of turning for Divine Fury was the equivalent of spending higher level spell slots on the JPM's Arcane Wrath.
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Shadow Sun Ninja
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If you don't have Stunning Fist, you don't gain uses of it for your Monk levels. I don't see how SSN changes that. Similarly, I don't see why SSN should let you take Stunning fist without meeting its prerequisites.
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