It's great that they're continuing work on Latex, but actually, I think my biggest annoyance as a fairly casual user is that different third party (even those that come in texlive) packages don't play well together. I've always had problems trying to get multi-column text and figures to work as expected and it's invariably taken a lot of fiddling. I'm slowly starting to move towards markdown and other markups that output to Latex to avoid this...is anyone else doing this?

What's the relationship of LuaTeX to LaTeX 3? I thought LuaTeX already does floats/regexps?