Sorry, but I don't get all the sadness. Placing it after set up makes it very overpowered. And if it only could be garrisoned by seraphon it would be a no brainer, but still very powerfull. Or you would mess up your opponents deployment zone, or you get it.
Now it serves more of a tactical placement and you can do lovely mindtricks with it. I feel it’s a bit like doubleturn. Competative players will make it work. And im sure we will see some great (mind)plays with it at big tournaments! So if anyone has some good use for it, please post!
However I do feel bummed that the rules saddens most of you. So here have a picture of my almost finish RSE (I’m not the best painter and with small kids around Im just happy I got it painted

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