How to facelift the backend applications

[Marius Schmidt]

Hi OfBiz Mailing list,

I am currently in the process of evaluating OfBiz as core system to 
manage our newly founded IT cooperative. I might ask a couple of 
questions over the next days :). Unfortunately some of the reactions I 
got in presenting the backend were exclamations like "Really, but that 
UI looks older than me!", "that will not be fun to work with" or "do we 
have to fill all the fields?"

So after reading half of the partially outdated two OfBiz books on 
Packt, the AsciiDocs I found so far and the quite fragmented Confluence 
parts I am still not sure about this:

What would I need to do, to facelift the backend applications to e.g. 
use Bootstrap as base and hide fields we are not going to need while at 
the same time retain upgrade ability to future releases?

Best regards

Marius