Hey,
Marcel here :)
Yup, I have to agree with what you said. Especially last year, we focused on a lot of new tools, which then lead to more bugs on the existing apps. Meanwhile we have grown our team and just released a new version of Tinkerwell (2.13) that fixes a ton of those small things and adds a lot of new features. Same with HELO, and Invoker will come next.
So yeah, it's all on our roadmap :)