Glad you like the software! Via stitching and stitching around edges for shielding is a popular request, adding your vote will only help push it up the possible new features list. The focus for Altium Designer 10 is some serious kick-ass data management capabilities, and we'd love to hear people's comments about what they need in that area.
AltiumOfficial
I really like this software, specially the tuning tools, but it'll be nice if they add a stitching vias placement tool, and a via shielding tool... Cheers!