1.) Are you going to include a proper, EB/Mother 3 style map this time round, or will you go for EB0's ambigious, unclear map?
You will be able to use both the eb0 style map, and individual maps for each of the towns. The Eb0 style map will be a bit more detailed, and will show major roads, and train tracks.
2.) Will the original inventory size (just eight spaces!) be increased in this remake?
How many inventory spaces did Earthbound have again? And how many did Mother 3? I still need to make the comparison between the 3 games to see what the most fair inventory space count was.
3.) Will Teddy be a permanent addition to your party after Loid blows him up, or will he remain incapacitated in the old man's house through the rest of the game?
Plot wise, it wouldn't make much sense to have teddy go back in. How ever, I think they had the plot set up in such a way because the original EB0 had a max of 4 party members at a time, 3 controllable characters (such as Ninten), and one non controllable one (such as Eve). Also in Mother 1'd version of the plot, Teddy dies, as in cannot come back, cold, rotting corpse dead. This could cause even more consistency problems. So the answer is probably no. This may change how ever. I also had an idea to have a sub quest to reget him into your party.
4.) In EB0, there is a lot of unnecessary over-world land, particularly around the North West of Podunk around the zoo, and one or two places in Magicant. Will you bother to include these areas?
This is a very good question. These long walks will probably still be in there, this is because the player will now have a Mother 3 style running. This will make this situation better because Eb0's run sped up the entire game, and not just your party. Also because battles are no longer random, the amount of time it takes will be decreased even more.
Also I ask again that anybody who is good at remixing music contact me. We need someone to do a few last songs.