[MENTION=7006]DEFCON 1[/MENTION] : the monk doesn't have the same power structure of the psion, battlemind and ardent for the same reason the barbarian doesn't have the same mechanic of the druid or the shaman. Power sources don't dictate the power structure. The monk is an example of the "psionic-boosted self" aspect of the power source.
But there's a difference here. None of the Primal sources have a unifying mechanic, so there was nothing the Seeker needed to "fit into" per se (at least with regards to how their powers were designed.) Martial and Arcane are also like that. There's certainly a unifying
story behind the power source, but those three sources don't have a game element that connects every class within the source together.
However, both Divine and Psionic have a very specific mechanic created for them that all classes fit into
until they decided to put Monk and Runepriest into them after the fact. The Divine classes all used the Channel Divinity mechanic, the Psionic classes all used power points. To not have the Monk and Runepriest follow the thematic mechanics of their respective power sources makes it more difficult for me to accept them as actual classes of that source.
I really have no actual evidence as to whether what I mentioned did or did not have an effect on the excitement/interest level of the game... I'm just spitballing here on another possible reason why there might be less currently than there potentially
could have been. For me personally... all I know is that as I look back on Player's Handbook 3... I know that it did very little for me. The Psionic power source was cool to a certain extent, but I don't like the Monk being a part of it. The Seeker seems a nice addition to the Primal source, but it was nothing that I feel I was missing from the source before that point. And I
in no way accept the Runepriest as a Divine class... partly because of the lack of Channel Divinity, but also because the class itself gets it powers from runes and NOT the prayers that the player's god answers. So where's the divine in that?
I just wondered if I wasn't alone on these feelings towards the PH3 and what then turned into the lack of a PH4. Many folks don't care, which I fully expect, and many folks probably liked the direction that PH3 went into. But as I mentioned previously... it just makes me consider whether what we currently have (PH3 as is last March and Heroes of Shadow upcoming in April, with the 13 months of theoretical game interest between them) will turn out to have been better/more exciting than a PH3 last March that had (for example) four full Psionic classes, 2 Ki classes (Monk and something else) and 2 Shadow classes (like necromancer and something)... with the expectation that some time in the next month we would be getting PH4 with the remaining 2 Ki and Shadow classes, put a full slate of 4 Elemental (or whatever power source they decided made the most sense from a story perspective for the game)? And speaking personally... I think I would have been more excited during this past year for the PH3/PH4 combo than what we are getting. And I freely admit this is mainly just personal bias, but I wondered if many others felt the same way.