The new changes are welcome,they not only work to introduce more funny gags,but it also works to differentiate from TBoTS,the new changes give more sense of originality,and having it split up gives place for new jokes which I think were appropriate for the story.
I also think that the trip back to ponyville its a welcome change,does make up for the story without cutting stuff unresolved.
Having said that,I think that EP1 is probably ready for submission,is entertaining enough to actually expect for a second episode and has some clever jokes to keep people interested.
Finally,I should point out that it now differs quite a lot from TBoTS,what molested me initially was that it was pretty similar to TBoTS, however doesn't seem to be the case now,I say this due to the plot structure(Trixies revenge with the movie(arguably)/Trixie's revenge with TV program)and the potential gags and jokes that can come up out of that context(manehattan,tense elevator situation,the billboards).
Now the jokes and actual structure of the plot and delivery differs even more
from TBoTS which makes it more original,and the newer jokes makes it funnier
to read and interesting to follow.
I guess that that is all,however I think that the delivery on the EP2 should be revised,not that I have critics against it,but probably it could use some checking and modifications.