I don't mind the criticism. Actually, I'm glad it's constructive as opposed to someone who says "It's good" to anything. You've probably met those people before ^
Actually, thanks for going in-depth and being constructive, I might add.
I was confused whether to call these arrangements or remixes though. I guess I'll just call it playing with an old snes game's composition with a soundfont, though if you can come up with a better definition, correct me

A lot of the Seiken Densetsu midis are really just ripping the original music with the spc midi ripper, and then fixing each of the channels by ear by disabling the channels playing in ZSNES. Percussion also needed to be done completely by ear since they all ripped to bass drums x_X
As for the endings of each of the songs, I'll admit I didn't feel the need to loop them since I would do so later in the future after I get some criticism as like here
Yes, the first one IS supposed to be ambient. Though it's the only one I would go as far as to say changed in composure, aside from the second mp3 in which I used some harmony with a shamisen.
Though Ancient Dolphin's original was even more ambient, I simply wanted to recreate it after hearing the results of what a Yamaha piano would sound like in it as opposed to a quiet marimba.
The fourth one was actually much more quieter before, but for some reason I made it like this. Blah, I don't know why I did that. I guess I'm just a synthtard as opposed to the trumpet I used earlier

I still have the previous version saved though, fortunately.
I will however admit that I
did base off of a midi for the last one since ps2 games use streamed audio and such as opposed to something like SPC. I wasn't able to make out the notes of this song.