Thank you for your feedback! Of course there is access to the castle.
No definite use yet, so far only for displaying values.
Suggestions: About the first, I agree it really bothers the eye About the second, you have to be an ant to take over the kingdom without it (it is necessary for achievements). If you want not to be an ant, just do not eat him when you meet him. And as for the third, there will be another encounter, such as some enemy or something else.