About the party info, I meant like current location, or something like that, maybe a little indicator in the top right/left (whatev) that tells them what party is currently in use. And about the name coloring, I was thinking it could be used to show the different factions, such as places with a blue name could be allied countries, red could be enemies, green could be neutral, and yellow could be wild land. It could also be used as well to say the difficulty of the dungeon, or even just in case if the player is using a white background, and wants to change the color to black so it can be seen better.
While that is correct, it depends on what exactly you are specifying, but either way, it's too small of a piece of data too actually make a difference... and I mean really small, where it's only 8 KB big, which is not even a percent of a MB.
Unless if you make the brick wall a Tile B-E graphic, the only way I know how is to inbetween the text boxes of that slime, put in a transfer player to a new map with the brick house there. And for the settings of the transfer, do not show the transition (Like you can choose whether the transaction will fade to white, black, or not show at all) and it will seem like it appeared out of nowhere.
You could also make that brick house a character graphic by creating it's sprite in a drawing program, and have it appear on the spot.
My suggestions are achievements for reaching lv 10 with every character.
Achievements for getting each different ending.
An achievement for acquiring the *flowers* on Jovial's timeline.
Maybe you can put in a minigame, and give a prize if you get a highscore.
Make an achievement for passing each chapter.
I kinda feel like Jovial's timeline is too small, I feel like you could have more of him travelling through the mountains before coming to the campsite, and the area with the goat feels too mundane and not very important. Increasing it's size and possibly have some events happen along the way could help.