Thanks for your feedback. I can understand if the framework doesn't suite your need. After all a framework with this many built-in features will inherently be more complicated and not suitable for learning or unintended adaptation. That is a fair criticism. However I feel like I have to defend myself against the accusation of this being a cash grab. if you have bought TBTK2 recently at $45, you should be able to upgrade to TBTK3 for $15. Which come to a total of $60, exactly what it cost for TBTK3. If you have bought this at $60 in the past, that means you have it at your disposal for at least almost a year. I hope you understand that I've been actively upgrading and adding features to TBTK2 for a few years, and TBTK1 for another few years prior at no cost for all users. I feel like it's only fair that the new TBTK3, which by the way was made from scratch with more features and better in many ways, deserve to be a paid upgrade. I would also like to point out that the reason why there's a new version is the very reason you mentioned. The old codebase has been expanded to the point where it far exceed what it's designed for. It becomes almost impossible for me to implement certain major upgrade that I had in mind. And please believe me starting from scratch again is not something I do lightly. I first release TBTK in 2013 and this is the only second time I rewrote the framework and the first time I charge for it. Now I intended to keep upgrade and maintain TBTK3 for as long as I can. Finally, I would like to point out that I still actively support and maintain TBTK2. So if you don't feel the $15 upgrade is worth it, the old version is still perfectly usable.