Try to defend Rainbow Power (and the Rainbow Castle, if necessary)

[Commander_PonyShep 349]

You know, what I noticed regarding the S4 finale is the fact that both the Rainbow Power and Rainbow Castle are receiving mixed opinions, while the big, dumb Twilight/Tirek fight is receiving the most spotlight for its violence, dark themes, and DBZ-level stupidity.  The reasons include the following:

1. The Rainbow Power scene was rushed and instantly resolved the conflict, which makes the Rainbow Power no different from the Elements of Harmony.
2. The palace replaced Twilight's library, killed a part of her identity and replaced it with a new one (just as it did her library), doesn't fit with Ponyville very well, and isn't as homely as Twilight's old library.
3. Both the Rainbow Power and Rainbow Castle are designed to sell toys, and nothing else.

But let's see what might happen if we were to defend both:

1. The Rainbow Power fitted better with the show and its motifs than the big, dumb Twilight/Tirek fight, and restored relevancy to Twilight's five friends, unlike said fight where the girls could just as easily been brutally murdered (not just have their magic stolen) and stuffed into the refrigerator to advance the story, a la the entire supporting cast of Dragon Ball Z.
2. The palace reflected Twilight's new role as not only princess, but also the spreader of friendship.  Plus, her friends receive thrones of their own, so that they could retain even more of their relevance as Twilight's little helpers.

Can anyone else defend the Rainbow Power and Rainbow Castle like I did?