Remember the sacks and backpacks from the original? The only place I recall finding them for sure was in Junktown @ Killian Darkwaters on one of the tables to the far right.
The game mechanics for using them sucked, and I don't think anyone ever actually used them (what's the point when you can just browse your inventory). But for Fonline, I think they would be a good idea to bring back, even if they still used the old mechanics. You could put all your stuff in a sack, and hold your sack in your hands without worrying about thieves or people pretending to be thieves.
