I like it, and that there is a fair amount of story between the actual Raid's.

However compared to CT and VA I think CT was just a series of trash encounters in between fairly evenly balanced bosses with good mechanics. Void Ark series I felt the actual layout of the raid and bosses was better than CT, but the story that connected it was better than CT. With the Ivalice raids, I like the larger boss fields, but in general I think we're kinda just over-compensating for gear creep.

All the raids kinda have the same established pattern:

1. Three groups of trash
2. One decently hard boss
3. Three paths of trash
4. One fairly facerolly boss
5. Some more group trash
5. One reasonably good mechanics boss
6. The final boss which is often easier than the previous boss.

Like I felt the lighthouse was more fun than the Rabanstre raid. However I like Sycrus Tower the best out of the Crystal Tower (though I felt the end boss was more fun in WoD.) Void Ark series, I actually preferred Dun Scaith, if only because the final fight felt like "did you think this was over?"