Personally to me, Guru Rinpoche, Dorje Drollo and Dorje Shugden all contain the same wrathful and enlightening energy. There is no difference between the 3 but the appearance. So in retrospect, the Dorje Drollo on Dorje Shugden statue is stupid because it represents Guru Rinpoche supressing and tearing himself up and it will generate the energy that will cause unfortunate circumstances to arise.
The Dalai Lama consecrating the statue is actually him trying to send a message to the nyigmas that Tsongkhapa is one and the same with Guru Rinpoche, which is in actuality a very powerful statement to the nyigmas to not hate gelug and also to reinforce and remind them that Tsongkhapa and Guru Rinpoche is one and the same in nature and for them to not be insecure.
To unite Tibet, the other sects must feel that they are part of Tibet and that they are accepted and represented fairly in the parliament. They also need to feel that Gelug is not trying to usurp their monasteries as there were many rumors that the Gelugs wanted to do so in the past. All these are nothing more than insecurities by the other traditions.
The last and most interesting prophecy is the Karmapa telling the nyigma monastery that one day they will all have to rely on Dorje Shugden...does that mean that the nyimas will have to practice Dorje Shugden too in the future and HHDL is just planting seeds..