One of the major stumbling blocks for implementation of permalinks is the creation of the .htaccess file.
There is at least one ticket requesting automation of the creation process via the admin area of bbPress (just like WordPress does). But the problem with that is that we support both the "MultiViews" and "mod_rewrite" methods of creating permalinks.
In light of this and some other problems with "MultiViews" I'd like to gauge the possibility of dropping "MultiViews" support in favour of "mod_rewrite".
What do you all think? Do you use "MultiViews" or "mod_rewrite"? Why? Would you really miss "MultiViews" support?