That would be cool, thanks.
Yes. How ? There's a possibility to pause the install process(in BWS) at any time you want to (so do so after the BWS has extracted the mods), and then remove the old files and extract the beta files, the file names need to be named as they would be in the current version(though I don't think you need to do this with Demivrgvs's mods), so do the renaming, and once everything is set up as if it were in the old, unpause and let the install process continue.Yeah, erhm, you can't actually install BWP, as that's the BiG World Project... the BWInstall.bat install and BWS(.vbs tool) installs are a bit different, people usually mean BWS when referring to the BWP and I am hoping that's the case here with you.
Also if there's any added or removed components, you might need to change the BWS install settings or quote out the component name header from the beta mod so it's installed as a part of another component.
There's all sorts of possible of trouble coming from using beta mods and so know that using them is done with your own discretion.
I mean the graphical setup, not the batch file, I never remember the names.
And of course I do know how betas work