…The problem is, the same writers had the idea for Darth Maul. As stated, though Maul’s stories were epic, they were plagued by his unnecessary return. The episodes suffer for such a poor decision in story. The plots have also gotten a bit…less fruitful than before.
What I think is happening there is probably more to do with the fact that Maul’s Return wasn’t properly forecast in the movie. (Unless you count falling down a shaft as being a call Forward to Luke doing the same) And thus had a large degree of problems integrating it into the future plots.
With MLP, so far, I’ve gotten enough pieces of information that in hindsight make it easier to accept Twilicorn/Pegalight. For me at least. In fact, I once theorized that the fact that Twilight is Celestia’s protege was because they may have wanted to make a slight precedent at even the first episode, in case they were ever forced to make her an Alicorn.
Basically, the earlier information pertaining to later ideas is introduced, the easier it is to accept the idea. And so far, I’ve seen enough information to say that it’s going to come across as fairly acceptable.
…Strangely, I’m suddenly reminded of some old wisdom. “The riskier the decision, the more glory one gains when one manages to pull it off.” Kind of like betting in a horse race. (Did I Pun?)
That kind of ties into what you’re saying. In which case, yes some ideas are “Bad” in the sense they are incredibly hard to pull off convincingly. But those same ideas are also the things that if it does work, becomes possibly the most memorable part of the series for how well it was done.
You said so yourself, The Darth Maul episodes were epic, even despite the logical problem it had.
…But of course, no idea will ever work perfectly, not a single one. And you can always find some fault with even the “best ideas”, or Best Episodes. So the fact is, every single idea in existence is both good and Bad in equal Measure, and the more ambitious the idea, the more both the good and bad increase in unison… It merely depends on execution on whether it was done well or not.
… I guess What I’m trying to say is… Yes, Twilicorn/Pegalight is, in your words: “A bad Idea”. But only in the sense that it’s Risky. But Risky, although Negative… Isn’t bad in my sense of the word. Just you have to be really good at dealing with it to pull it off. And it you can pull it off, you essentially win all the Rewards… ALL OF THEM!