Here's something else for Karelia (makers of Sandvox) to chew over.
As far as Twitter goes, the dream would be to have a way to auto post to Twitter in the same way as can be done in WordPress. Beyond this, providing us with a Pretty Link-style URL shortener would be ideal.
If you don't know, all those link shortening services (bit.ly, tinyurl, etc.) are useless for SEO. In fact, beyond that... they're counterproductive. When you use one of those services, guess what happens? Google sees links in your tweets pointing to those services, not back to your site (or wherever it is you're sending a reader). No link juice there. Needless to say, this is not good.
Sadly, with the relatively small Sandvox user base (which is not all that SEO savvy nor demanding, from what I can tell), the odds of Karelia implementing such features (I should think) are slim and none! This leaves us with using TwitterFeed for autopinging to Twitter, which in my experience is not all that reliable. Sigh.
The workaround I'm contemplating for several of my Sandvox sites is to have the actual blog portion of the site be in WordPress. A pain in the butt, to be sure... but perhaps the only way to get there from here.
Go on, tell me whatcha think, Hoss!