I've played every edition of l5r to some extent over the years.
I like the changes that FFG have brought, but since my gaming group has fallen apart recently I can't comment on how clunky or intuitive the rules actually are.
I figure when the full book and some gm screens and a better trial adventure comes out I'll make .y final decision.
I'll probably just play it because it's the latest edition, and I'm fed up with too many elements of the old games.
The dice are better, lore skills don't exist, i like the new advantage/disadvantage, there are social mechanics to interest my dice minded players into trying courtiers. I think they have tweaked the fluff in ways that will make me interested in monks and Shugenja and possibly have my players like them too.
I'm optimistic, and trust that the beta will streamline things better. But if it sucks oh well I'll use Cortex Prime and just use the new timeline.