The dwemer armor in Morrowind was the most horrible thing that has ever appeared in a videogame... it was just pieces of golems!!!
In Oblivion it was a nice armor. Not everything was better in Morrowind...
You say that like it's a bad thing. I like the idea of Dwemer Armor being a dual-purpose Centurian Shell and Heavy Armor. It's another demonstration of Dwemer engineering ingenuity, by giving them tactical advantages. If they have enough suits of armor, they can be filled with mechanical chassis to avoid Dwemer losses. Or, if they don't have enough chassis in a defensive effort, or need the skill of a living wearer, the suit can be worn by either.