I think that You both are wrong and I'm right. Becouse those card - Event Cards - don't have any tiles on the other side.
Look aty those cards below:
So looking at those I'm perfectly sure that I was right. The question is just how those symbols - You could see those on the Runebound dice - are used in traveling.
And about glyphs - I think that in this edition will not have those but there will be doors in the same type as those known in 1ed.
In my opinion, just speculation, heros will not have the oportunity to visit town in the dungeons. Just between the stages they can go to town and make some shoping.
The next thing I think will not included are potions in such a big number. By that I mean that a hero wil not the chance to find so many potions in the dungeon and the heor will not have a chance to buy to many of them in the shop. Becouse that would make playing a Healer useless and would brake the balance of the game. Why to have a Healer in Your group when You just need potions? Right?
Besides rememeber that this edition will not have any Treat & Conquest Tokens so the glyphs are useless in this edition. They can be just the exits of a map and nothing more. I think that in Descent 2e it will not be so easy for a Overlord to kill the Heros - that the second argument for a smaller number of potions and no glyphs. That just pure speculation but still I think that's how it will be.
Also if You saw the Overlord cards You can see that card are very different from those known in 1ed. The Overlord is just playing cards by the conditions on them and not by paying any Treat. The conditions are easy like - Play on the start of Your turn or when a Hero steps on a empty space, and so on. I can assume that the game will be a little more grimm then the 1e.
PS. And when You look above those Event cards in the first image You can see Effects Cards and Effect Tokens like Poison and so on.