With all those snakes rising from her head it has to be Medusa.
Some of the photos show major reverse taper, others not so much, try & find the 'front' that shows the least taper issue & work from there. Be aware that they do not heal scars from branch removal and will rot out very easily from those wounds(as a few on the forum can attest to, rot that is). It cannot be avoided but can be used in your favor if its considered as part of the final design, it is also best to leave any major pruning until just after flowering.
With regards falling over & losing alot of foliage, is it possible to plant it in the ground till late winter. It is very top heavy with all that growth on, the weight of foliage alone can drag quite substantial branches down over a season. Being in the ground will also allow it to regain some strength lost due to the storm damage (it should be starting to push new buds by now).
I was looking at the pics again & its hard to tell, is the variegation golden or white? I was doing some more research recently & there are 2 types of variegate 'Hagoromo Nishiki' (golden) & 'Nishiki' (white). There are several other accepted names for both but these are the most usual.
I look forward to watching this beauty progress over the coming years & if you ever decide to move it on I am putting in dibs now
Matt