Hello there. I registered here today to post almost this exact same question, thought I'd check if there was an existing topic and stumbled on this.
Sad to report that 9 months on from the opening post and there's been no real progress towards compatibility with the above mods. The developers of Smart Moving and Animated Player have both gone to some effort to make their mods compatible with custom armour models, but every mod that uses them seems to do so in a slightly different way, so I suspect they're in for a bit of an uphill struggle.
Would the Forge developers consider the suggestion of incorporating an animation API into Forge? Is it technically feasible?
