Kill the 'New Yahoo' format...
The 'New Yahoo' format is change for the sake of change only. The new format requires opening each square to see all the content. Its time consuming and provides no benefit other than grouping subjects together. The old format allowed simple scrolling through the content and was easier and less complex. Change for the sake of change.

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David Weinraub commented
Yahoo Finance Portfolio 2.0 is absolutely unusable.
The My Holdings page now hides (under a per-item expand/collapse) the key things I need to see at a glance for each holding: shares held, total value, holding value change, and percent change.
All the transaction-based functionality is worthless to me. I just need the summary information described above.
Kill Portfolio 2.0.