If you make such bold statements then please elaborate them more. You say SPAM protection can be better.
We got good protection out of the box with for instance the TOKEN. We also have various addons: AKISMET, DEFENSIO and the HTTP:BL addon
I use both the internal SPAM protection of Pixelpost, as well as the HTTP:BL addon and that leaves me with 10 SPAM comments a day which are caught by Defensio. I got logging on my site, there are more than 150 spam comments a day which are stopped by Pixelposts own defences.
Gravatars are not going to be inside pixelpost. Our mission is to keep it clean and fast. If you want gravatar support check out this addon: Custom Comments
. It supports Gravatars and much more. The possibilities with this addon are endless.