That part is pretty heavily up to debate. Plus dont forget its B2P + Sub. For a lot of people that only really play at the start of an expansion its effectively a lot higher price/month then the 18$ token is.
Limited dungeon runs is kind of fine tbh. People are too used to spamming dungeons for fast leveling if you ask me.
The marketplace should have a lot more slots, IE 5 slots for standard, 10-15 for token. I found the delay on receiving silver to be a plus strangely, since it means you have to be more considerate with how you spend your silver, and it does limit Market Tycoons by a lot.
No, they shouldnt. Instead they should simply make trade/market/storage baseline and give other benefits to tokens. The 18$ price in itself is fine, its what you get from the token that isnt.
It might seem nice to you to suggest lower token prices, but that in itself wont fix anything, people would still have to pay for trading and selling on the market.

