Made with my terrible editing skills, this is what I think swamps should be like:
Ooh, yeah, I like that! It looks so spooky, and just a little trippy. Earlier today, I had the idea that rare Stropharia Cubensis mushrooms could be added to the game, and when used to make 'shroom meal, you would start tripping out for the rest of the day. It would be cool if the entire color scheme was altered like your photo.
I see that Notch has posted his thanks to everyone's suggestions on his Twitter page, and says that while it's too late for beta 1.8, he will be working hard to improve the swamps for 1.9. That's excellent news!
The definition on swamp is pretty loose. While many people picture the mangrove forests and heavily wooded ares, that is only 1 type of swamp or a portion of the swamp. Other swamps have no trees, clearer water, only a thin layer of organic matter (Peat) before you hit a sandy bottom.
Some randomly appearing single polygons with a transparent animated GIF displaying flying hordes of mosquitoes..
I understand that mosquito storms are actually a common phenom in arctic regions of the tundra, this should seem counter-intuitive though, still it would be an interested asymmetric threat that hampers survival.
I think some of the more extreme biomes should have asymmetric threats like blizzards in colder regions that limit your vision and can freeze you or sandstorms in deserts
Mossy logs, Green tinted water, lily pads, sky tint, taller trees and sunken trees would make it perfect.
And frogs... their sound and presence would just lend so much to the atmosphere and give it that southern swampy feeling.
This is all ideas I tweeted to Notch long ago and even recently when he posted the picture, but he is always reluctant to answer back or acknowledge. Leaving me only hoping that many others would have same/similar ideas and suggestions to eventually get his or Jens attention
I tried making my own swamp using MCedit, ended up corrupted and just didn't finish it but I would like the swamp biome to have a similar look to this:
Also some darker sections:
Or even have a small clearing for a giant skull temple (would be better surround by trees though).
I did make some zombie spawns in special rooms under water so when you got near they would float up out of the water - I think this would be cool to have crocs spawn underwater and rise to the surface when you are near them, like an ambush. They could even pull you in the water and try to drown you if you dont kill them quick enough =D
Your swamps are pretty damnright awesome as an initial attempt, obviosly the disconnection between the diagonal trend in teh branches needs more connectivilty but amazing non-theless.They don't look like a classical swamp but more like some sorta enchanted mega flora swamp. A sorta pandora-esque magical realm which would be cool if notch could add some more exotic and magical biomes and maybe put some biolumenescent mosses or lichens on the massive caverns created by those trees.
Zombies floating up from teh water is a good idea, but i think notch ultimately needs to think up some sorta hostile and aggressive water monster that can outpace you in water, unless your in a boat. As to what form it should take, it doesn't necessarily have to be somethign that is a normal earth predator.