Redirects are nice, but these are things I had to work around:
1) They are all 302. I'd be very nice to be able to choose the response code or at least select "permanent" for 301 redirects. AFAIK this affects SEO.
2) They don't handle trailing slashes automatically. To redirect both /old/page and /old/page/, I have to add both to the list or work around this with rewrite rules on the edge.
2a) At least stating this clearly in the documentation would be nice. And the fact that the target page should really include a trailing slash in any case (if it doesn't, Bullet adds an extra redirect that is undesirable).
3) There isn't a way to upload a csv with redirects. I have a lot of legacy links and adding each of them by hand is very cumbersome.