I've never been a fan of SI for the reason's previously stated:
1.Financial reporting should be included in a financial product,
2. Too difficult to use as a financial reporting tool
3.Price was too high for the typical 100 user,
4. The BI tools (the primary focus of SI) are not what the customer is looking for,
Regarding @john Hoyt's remark about using Budget Mestro as a reporting tool, both Profix and Adaptive Planning have similar capabilities. As John points out, these are intended to be budgeting tools with financial reporting as a secondary capability. However, these reporting platforms have become quite sophisticated. They are not for the cheap-of-heart or casual budgeter.
Here at CS3, we have settled on BizInsights as our financial reporting tool of choice. It has the same limitations as F9 when it comes to Frankensheets (I like that term and plan to plagiarize it. I'm just pre-warning the holder of the copyright!) but we work around them as best as possible. When more capabilities are needed, we bring in Adaptive Planning.
I believe I understand why Sage brought BI tools into the mix, particularly for up-stream users of 500 and X3. I just don't see the typical 100 being ready to leverage dashboards and KPI's, much less understanding how to leverage the SI tool.