Testcomplete should export code completion information for use in other code text editors, such as Sublime Text 3 or Visual Studio Code. This would allow testers to write more scripts while other testers on the same team use TestComplete for its primary function: building and maintaining keyword tests and checkpoints.
Currently, tying up a very expensive instance of TestComplete does not make sense when editing code is not in the top 5 use cases of the tool itself. Additionally, SmartBear would benefit immensely from the efforts of other popular free text editors.
Welcome to the TestComplete Feature Requests board!
Here you can review submitted feature requests and vote up the ones you like! If you can't find the feature you want - go ahead and suggest your own idea. Ideas with the highest rating can be implemented in the product.