Balance is a tricky thing since there is no way to measure it. It has many dimensions and no right answer. I mean that it is definitely not just about new features vs improvements to existing features. It is also about direction A vs direction B, "xxx-dev" vs "yyy-dev" and many other things.
And for me this is for sure not the conversation about what is important and what is not. In all my comments I have always used "from my personal point of view" statement which definitely means that other people have different opinions. And this is not about 2 issues I have mentioned. There are just examples. There are other examples in different areas.
As the final comment I want to say that I do not like the concept of balance in this context because it is extremely subjective in the same way the definition of importance is. I may argue that slightly better concept is that successful strategy should be built around exploiting and expanding of your existing core strengths rather on working around your current weaknesses (I apply it when I think about existing users and features for them vs let's say new generic editor). And I like the concept that I work on what I want to work on or on tasks which are defined by my employer. Main reason to like the last one is because it is very simple and it works.
I think that there is no reason to continue this email thread anymore and I will unsubscribe from this list in few minutes. Thank you for the comments.