With zero inside knowledge, it appears to me that they have a very brittle legacy feature set due to scale concerns, tolerated integrations/extensions, and being held hostage by the community. There is new product feature development happening but it appears disjointed from the legacy, which could indicate leadership conflicts on priority, an inability to marry the old and new, or an inability to devote time to anything but upkeep of the legacy.

Previous large-scale changes have been presented to their community and generally have been panned by the community, and often unreasonably so.