I'm afraid I have to agree with OP on this one. 9 months is far too long to be waiting after an early access release for a fully featured product with only snippets of updates being released. 3-4 months to get the product polished off would have been my expectation. Razbam, I feel, at least owes those of us who have put money down on the product a full planned features list and associated timeline for implementation.
I love the Harrier, I really do, but my confidence in Razbam's ability to deliver a complete product in a reasonable time frame has been broken by my experience with the AV-8.