With inventory such a difficulty for Players, I'd like to suggest an item that works much like a TARDIS. Drop it on the ground and it behaves like a Displacement Glyph to a small home level. When you emerge, back it goes into your inventory. For more fun, Shove furniture over the item to furnish your dwelling. Maybe even patches of non-disappearing dirt, or a windowbox, could allow farming.
Interesting idea. Potential flaws: Could trap self by wedging something over the return glyph Could break game by providing instant escape/sanctuary for healing and buffing Could lose glyph by wedging something over it in the dungeon
Honestly, some form of "town portal" would not be exactly amiss - but not precisely in flavor for the game either. A massively useful convenience? Absolutely - there's a reason the Diablo games did/are doing well, and the convenience tweaks Blizz made to the standard Roguelike model are a big part of it. Velorien: there's no truly "instant" escape possible; you'd have to spend a turn to drop it and then a turn to walk on it, and for balance issues I could easily see a constant "no regen 4 u!" effect in place on the "home", and a dispel-on-leave trigger to prevent buffcheesing.