Searches of the lost city

Here I am, finally playing through this map. I usually don't meticulously study maps in the editor beforehand; it's not as fun to play when you already know everything, but some maps are designed specifically with such a preview in mind – otherwise, it would be almost impossible to complete.
I have some questions.
1. A garrison with 70,000 Azure Dragons in a Dungeon, which cannot be joined to your army – is this a bug or a cruel joke? If it was intentional, then WHY are they there?! (I think it's still a bug). It would be logical to break through to them (killing 671 Crystal Dragons!), join them, and defeat all the enemies. But no!
2. "Scams" (that's what I call them): The Seer gives the Shield of Lion's Courage, but to obtain it, you have to give up the Statue of the Legion (not the "Legionnaire," by the way!). What is more valuable to the player? Personally, for me, it's the Statue!
3. A scroll of "Summon Ship" in a hard-to-reach location, guarded by Azure Dragons and Magic Elementals. What's the point? I learned this spell a long time ago! Is this the author's joke?
My playthrough is far from over, and the Author's Vision has not been revealed, so there may be new questions and comments.
I don't want to offend you; I'm just trying to be objective. Good luck to you in mapmaking!

Marmot
As the author, I didn't intend for the map to be previewed in the editor before playing; otherwise, this condition would have been mentioned in the description. This is a personal choice for each player.
Regarding your questions, I will try to answer:
1. A garrison with 70,000 Azure Dragons in a Dungeon. This is not a bug or a joke. I didn't want the player to have additional upgrade opportunities, as there are already quite a few. The area inside the protected zone was intended for the AI player to level up. (the color is bluish)
2. Regarding the Seer, I don't see a subject for discussion. If you don't want to, don't give it up; it's your right. However, for the Seer's quest, the exchange is not for a statue, but for a Horn of Plenty. Just so you know! And whether to call the statue "Legionnaire" or "Legion" is not important to me; I took the names of the artifacts from the editor.
3. Regarding the scroll, this is not the author's joke. I'm glad that you already have the "Summon Ship" spell; it's intended for those who don't. This is also possible. I didn't put dragons to guard it; that's a mistake, but the Magic Elementals guard not only this scroll but also other artifacts.
I didn't quite understand what I could be offended by. Objectivity is a difficult thing; not everyone can do it. Thank you for your wishes; I also wish you success in mapmaking and playing through my maps.
If you have any more questions, I will be happy to try to answer them.