@Thunderer , I see you worry about the "cloned" parts - don't be, they are not an issue for now. When I saw his new model the engine was the first thing to get my sight upon - cuz just like you I thought its too bulky. But then I carefully overlook whole model and found the "weak" spots were actually covered with these "armor plating", so top hull armor, which no longer have "shell" was wide open and @Unlucky_Soul very logically assumed to place one plating there. The connection between top/bottom "shells" - element of all bretonian caps - were also reinforced. But the engine, without the plating is such an easy target and would look so much oddly simple. To make bigger engine and reinforce it with more hull plating is not bad move.
So far the middle/backward parts are fine and only the head needs tweaking, while both "shells" - serious modifications. Once he does that additional minor detail fixes could be initiated before final texturing.