1.10 is Pack rat hell

[Crystalion]

[...]
(Or 16 for two big two handed swords on a barbarian dual wielding swords)
[...]
16 for post in the belt

I think that adds up to 51. :)

Well, I hadn't considered a bard dual-wielding two 8 slot swords so that would make 55 max on-corpse storage. Here's how I broke down the storage, in terms of max 1x1 units not-used up in stash...

head: 4 (2x2)
neck, fingers: 3 (3 1x1)
hands: 4 (2x2)
feet: 4 (2x2)
waist: 2 (2x1) (but not counting belt contents, which don't stay on the corspe)
[edit: channel1 poijnts out 4 potions stay on the corpse, and if these are full rejuvs I suppose we should count them as useful,
but I'm not counting them here]
body: 6 (2x3)
left hand: 6 (2x3) *** I should have considered barbarian
right hand: 8 (2x4) (long shield)
weapon switch: 6 + 8 (left + right)

for a total on 4 3 4 4 2 6 6 8 6 8 = 51 1x1 units that would otherwise need stash space.

That's just seat of the pants, and, as noted, wrong as a max for the barbarian.

As I noted before, if you want to keep a corpse-recovery set of equipment without having to use stash space, this might be practical if you're happy with the new way you can have multiple temporary corpses. The downside would be that, having cleared your way back to your corpse, you probably won't have room to loot it in your inventory. The upside is that you don't typically have mules, at least in v1.10 non-rushing, that are allowed to come into nm/hell to hand you recovery equipment so having your own body handy might be more practical than expecting a friend to show up to help.