You want DOSBox ECE edition, it's a fully featured Vanilla build with more patches.
It's built by Yesterplay80 a user on Vogons, it even has a thread here on DOSBox Development board.
Nope. Don't want it with more patches. I want it vanilla, but having all the same feature capabilities as the standard DOSBox. Any extra functionality should be the result of it simply being a more recent version of the official DOSBox code. Patches are user created, unofficial code that is added in. I don't want any patched in features, because that won't give an accurate picture of the official state of development of DOSBox (it will have stuff in it, that won't be present when the next official version of DOSBox is released). I don't want to get dependent on unofficial features, because then when the next official version is released, and I download it and switch to using it, I'll have to adjust to not having those extra features available.
In fact, your statement of it being a vanilla build with patches, is a statement that contradicts itself. By definition, vanilla means ONLY using official code, and not so much as one byte of code changed by the the person compiling it.