Some rant and suggestions for new Zot teleport mechanic

[VeryAngryFelid]

We know how many people dislike Tomb because of stairdancing, right? Now we got the same thing in Zot except worse.
See the vault below



It has all 3 stairs in view of each other with monsters coming from all 4 sides. Unresistable torment, unresistable blink allies encicling, unresistable blink away, unresistable constriction, unresistable berserk, unresistable mana draining. Do you see the picture? It's all unresistable, I can do nothing about it except stairdance. And yes, I had all these in this fight, the picture is after my fifth(!) stairdance, I have just entered the level.

So I have the following suggestions:

1) Display "Are you sure you want to teleport, it will be delayed" confirmation when player tries to teleport first time in Zot. (it can be disabled by "display_slow_teleport_warning=always|never|first_only" with "first_only" as default. It took me quite some time to realize why the teleport takes more than normal, so I had to retreat upstairs to survive and it teleported me on upper level.

2) Add "Seal doors" spell to Draconian Shifters.

3) Make -Tele items do nothing to prevent hostile teleportation (Blink Away, Teleport Other, distortion hits). It is boring to have a ring with -Tele in Snakes Pit and Zot. It can be removed in 0.5 turn but stops some of the nastiest monster spells.