Wait isn't that..? *reads description* Aaah I knew I just walked that Route some time ago (played Platinum for the first time, I totally skipped that Gen when it was released).
Looks very nice. :3 I already liked those random snow spots when I went by and those cute flowers :3 ...although, when I think about it now, it doesn't make sence to see such flowers and snow at the same time xD
Both. The fact is, if the game takes place some time before or after the events in Sinnoh then logically it would look different in some way. Even if it took place at the same time, the time to take to get there, it would be at least slightly different. And even without thinking of the time frame, some tile or layout choices that fit the style of your game would be good.
Just saying. And also, even with the time it takes to do all the maps, isn't it better to get it right than just "good enough".