I'm glad you're happier with your new room
@JOLT, but I think your representation of the two views is borderline misleading.
1) The castle shot from the new room has a much greater zoom/crop compared to the original room. Overlaying the good view photo over the 'bad' view photo and aligning based on the edge of Grand Flo building:
View attachment 926410
Zooming out, the full comparison is clear:
View attachment 926411
Of course, because these weren't from the same perspective there's some misaligned stuff, like the trees at the wedding pavilion, the wedding pavilion itself, and the castle.
1B) The "no head turning" comment should also apply to your previous room, see the overlaid photos above. Though maybe 3rd floor might be too low to see the castle specifically? Can definitely see Space Mountain and the Train Station in the photo. Maybe also Tron.
2) I think you gave up one of the better fireworks views at Island Tower, considering that fireworks (most nights) launch from north of the castle and, for typical nightly fireworks specifically, facing north is better than facing directly east, which some of the TPV do.
The Island Tower rooms that face northeast are probably the
best angle overall, but all things considered (and my preference for fireworks), north-facing seems better than the east-facing.
3) In two of your 'bad room' photos, the camera is simply turned away from Magic Kingdom...