Kai, I understand what you're saying, but I think you (or perhaps those whose opinions you're concerned about) misunderstand the context and "mission" of the Tibetan Classics series, of which this volume is a part.
Fortunately for us, this is not the only book regarding Mahamudra which has been, or will ever be, published in English, you know?
In fact, there are texts relating to Mahamudra that are going to be included in later volumes, from the Bodong and Geluk lineages, for example.
Frankly speaking, this series of books leans distinctly toward the Sarma traditions, in general, and toward the Gelukpa view, in particular. However, there is a great deal of material from other traditions, and even from those which may traditionally be said to be "antithetical" toward Gelukpa view, which will be included in the series. I think it's fair to say that all historical positions and traditions will at least get an "airing" in this series, though of course the series will not include every "Tri," doxology, sadhana, LamRim, sastra, etc., etc.
There are texts relating to Mahamudra practice which are more personally relevant to me than those included in this volume. But I have those texts, they are available to me, some in multiple translations.
For example, say that one is a practitioner of Chakrasamvara in the Drikung Kagyu Tradition. If one looks at the prospectus for the remaining volumes, one will see that there will indeed be a Chakrasamvara sadhana translated, along with sadhanas of Guhyasamaja, etc. However, that particular Chakrasamvara sadhana is not the one which is practiced in the Drikung lineage. So, tell me, should we be upset because a book called "Sadhanas: Vajrayana Buddhist Meditation Manuals" does not contain our own personal practice?
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