you're doing a good job with DBGrid - this tool has a potential to be great. The code completion, suggestions and formatting is excellent and finally someone realized that it would be nice to implement Emacs keymapping into a database development tool (it's not perfect as the only tool I know of that correctly implements Emacs keybord shortcuts is Emacs itself...but it's decent). For example I didn't find a way how to redefine "undo" - in Emacs it's ctrl+x u and I'm not sure if such multi-key shortcuts are even supported. But I really appreciated that finally I don't have to use arrow keys if I want to pick from suggested options and use ctrl+p/ctrl+n respectively (saves a ton of time). So the code editor is (by far) the best one I've ever used (compared to other major DB IDEs).
And now the cons:
1) I didn't find a way how to see/edit triggers.
2) Debugging features are missing.
3) Just a minor complaint - in the datagrid header the date/time columns are being showed as a COLUMN_NAME+date format which is an unnecessary info and just takes a lot of space (maybe there is a way how to get rid of that).
Please, could you clarify if you're going to implement these features (or maybe I just missed it). If so, I would gladly buy it (maybe I would also reconsider using NB and bought the whole stack) even if I don't like your new licensing model at all:-).