so here is the first primaris battle-suit done:
I went in a different direction altogether on the back in the end, swapping the archaic looking chunky-dread-powerplant out for a sleeker looking tartaros backplate. these rear shots also show you how the legs were 'stilted' using the mining drill parts from the kit and how I've used reiver pads to not only cover the join, but to continue the armour around the heels and round-out the look of the legs more. like how it is on a redemtor dread or kastelan droid.
All in all, the added height along with the lack of cables and un-needed struts everywhere has led to a sleeker primaris-esque design that fits in rather well with the rest of the marines, the mk5 references adding to the continuity with the troops.