I saw significant relationships between the alliance construct and notions of relational justice. While working with other colleagues, we tried to expand on the construct and found that it also overlapped with many items taken from Tom Tyler's measures of procedural justice. In doing this research, we found that some of the theoretical dimensions were not as independent as initially assumed, presumed. Nonetheless, we found it a useful approach for measuring relational dimensions.
I think the best paper that describes the critics to Bordin's alliance-as-collaboration construct is the one by Safran and Muran (2006) "Has the concept of the therapeutic alliance outlived its usefulness? (doi: 10.1037/0033-3204.43.3.286.)".
More recently, Doran (2016), in her paper "The working alliance: Where have we been, where are we going?" (doi: 10.1080/10503307.2014.954153) presented a more up-to-date description of these critics.
Finally, in my research lab we have recently published a chapter in Spanish, presenting these debates regarding the definition of alliance. You can download from here: https://www.researchgate.net/publication/331047631_El_rol_de_los_procesos_interpersonales_en_la_psicoterapia_efectos_sobre_el_tratamiento_y_recursos_de_adaptacion_clinica