@Suicizer:
-The theme isn't very original anymore...

Where are the plenty of other maps with the same theme? The last decent one posted on this site is from jackycola smb back in early 2009. The only other ones I found weren't comparable.

@MrFixxit694:

I see you've put in a great deal of effort to mesh these 2 great games together and have done a good job of it with mario_firstlevel. If you haven't already, I would suggest checking out the link above as it also aims to provide a similar gameplay. Great job recreating that first level! I only lost 7 lives and even felt that rush of fury directed at my controller whenever I died. (There is missing death material between two pillars by the way)

The mario_items is a nice idea to have as a sort of prefab template for future mapping. I believe there are some new tools in SVN which would make it even more handy to have. I would definitely consider making your items with the octree for geometrical details and not the texturing details. With a little math and a paint program, you could easily make custom textures to fit your geometry. Your maps will have way less triangles and you will have your very own texture pack. Again, check out the above link to see how jackycola did it. (textures!!)

Finally, mario_war being your deathmatch map, this is the one my rating will apply to. I'm sure you realized while mapping this, the scale and movements are fundamentally incompatible. This is the same effect as if you were to try and model your own home as a deathmatch map. My suggestion would be to restart it from scratch using your blocks and items as details and not as the meat of the level. Make it a lot larger and don't be afraid to take some creative license with the theme.

Mayhem

Sigh, do I really have to justify my opinion? Well, try these contents.

Sauer Mario Brothers
Mario Land 2
Platform World (I know, it's not a remake of mario, but the had the same principe and looks are very similar)
Super Mario Pickups (I know, it's not a map, but they fit the theme as well and could be used for other mario-themed maps).

As there is a Mario Land 2 content, I'm sure a Mario land content existsed also (yet it has been removed or lost, as a link is being provided on the Mario Land 2 content).
That brings us to at least 6 contents which carry the very same theme or a very similar theme.

It doesn't require that much skill as you needed back in the old days, as nowadays there are scripts which are able to generate such images perfectly (so it's way easier and faster as if you would make them all manually). It's something which I haven't stated in my previous comment, yet considered about it.
If you have no idea where am I talking about, try the next couple of links.

Cube-Art Script
Cube-art Image Converter

In theory, if you have a picture of the entire map (like here) you could generate the entire map in just seconds. Only configuring before generating would take some minutes, but that's all. Practically, it will take a little longer due the fact you can't load an image with a bigger resolution as 2048x2048 in Sauerbraten, but you could just make screenshots from marioland on an emulator for the pc and use those to generate all fragments. So it probably takes about 2 hours to create this content (as you also have to make it appear as 3D, which is just a matter of copy-paste).
Stating all this, this map is actually in conflict with the 10 Sauer Commandments, as it can be seen as a gimmick map and as taking less than 12 hours to make.

Just because it might be theoretically possible to do something in less than 12 hours doesn't mean it was done in less than 12 hours and also doesn't mean everyone can do it in 12 hours.
I'd bet even you can't do what you just explained until tomorrow noon, suicizer.

No because I have more things to do (my very own projects need to be finished, several events in real life, etc). I'll see if I got time to try out.