I agree. Some Technic is definitely necessary for any kind of proper Titan.
I have built the last bionicle combiner I had never built, and oh my gosh it's big....
It's Vezon and the Kardas dragon.
Even though I've never liked the style that 2006 bionicle went with its sets, this one being no exception, I must admit that this combiner is really good!
It's definitely shorter than Botar by a couple of centimeters (unless you stretch the neck up), but its sheer size is something no other bionicle set is really able to accomplish (maybe Skopio and Toa Mata Nui being the only exceptions). It really demands for attention.
One thing though that really bothers me is the use of an illegal connection in the head of the dragon (you can't see it, but the inner build of the head is stressing the silver mask mold). Also Vezon's waist is very wobbly for some reason.
But overall, pretty good!
Hope you liked my "reviews" on old Bionicle combis!