From what I understand, it is /possible/ to get Suave looking like I have it without using Winterboard, but it would be a huge pain in the ass. The main problem with Suave is that its icons are smaller than the standard iPhone size, don't ask me why, that's how the theme creator made it. This wouldn't be an issue normally, but something with the way iOS4 handles icon masks, specifically the ones on 3rd party Apps purchased from the app store, makes the borders stand out like a sore thumb. The way that I and many others got Suave HD looking the way it should is by
1. Replacing various icon masks/borders/overlays etc with custom made ones in Bundles/com.apple.springboard
2. Taking those aforementioned 3rd party Apps and resizing their Suave icons with a special psd template created by a member of Macthemes, Justin R. It essentially moves the icon down and right several pixels so that it effectively covers the black border that used to be there.
The reason all this is necessary, I think, is because Winterboard requires a long overdue update to accommodate for "unique" themes like Suave. This 2 part approach is a temporary method until Winterboard gets updated.
So, in short, yes it's possible, but you'd still have to resize certain icons, and you'd have to replace /system/ files by overwriting the existing overlays and masks.
@ trayanscragg Read my post above. Everything you need to get Suave looking right is in the main thread over on Macthemes.
http://macthemes.net/forum/viewtopic.php?id=16804800 It's a long ass thread by now though, so searching it is a pain. If you want, I can send you my version of Suave with all the necessary fixes, but it only has icons for the apps that I use, and that means any additional 3rd party apps you get will have to be resized with the psd that I mentioned above. I'm going to bed, I will try to help you guys out tomorrow.
EDIT: Last edit, the reason your dock isn't matching the wallpaper is because the original screenshot's wallpaper is in non-retina size. so when you put it on an ip4, it gets stretched, and the upper part of the dock no longer matches it correctly. What we need is someone to find the original wallpaper and resize it properly for retina dimensions (or even better would be to just make a new one, doesn't look too hard, just a gradient with noise)