Just to throw in my 2 cents ...

The main problem IMHO is the way how RC systems have been evolved during 
last years. It's not about just "shiny new RCS" and distributed RCS hype. 
It's the fact that modern RC systems are much more tied to the way you 
work - your habits, your preferences, your workflow, your usage patterns 
etc.

Regardless what some people think and advocate, our habits, preferences, 
workflows are (and remain) different. There can't be the one and only RCS 
which would fit to every user, project etc. So, what I'd like to see is 
much more simple and reliable conversion methods between different RC 
systems. Git's fast-import format has some potential, but we are not 
there yet.


-- 
Hasso Tepper