Hi,
Thanks for all the replies. We're getting quite a list. Here is the latest version:
1. Markers that can inherit parent attributes (e.g. marker fill takes parent stroke color so arrow heads are same color as path).
2. New gradients:
A. Conical (special case of mesh?) B. Mesh: (should match PDF types) C. Diffusion curves.
3. Vector effects (see: http://dev.w3.org/SVG/modules/vectoreffects/master/SVGVectorEffectsPrimer.ht... )
4. Multipage SVG's.
5. Multiline text entry.
6. Perspective transforms.
7. Paths constructed of sub-paths with different attributes. Objects that share paths. (Maybe included as part of vector effects.)
8. Control over stroke positioning (amount inside/outside path).
9. Vector fills.
10. Pattern filter: Variable pattern fills (e.g. size/density of dots as function of color/alpha).
11. Embedded fonts.