I plan on waiting for the promised patch 1.3 for vanilla, then repeating the test procedure outlined in the LM for the save/load bug. Only if I'm satisfied with the results of that test will I pay for BI proper. Depending on the timing of patch release vs. expansion release, I may not be much help. The other issues I can live with, especially as modders figure out workarounds, but if I can't reliably save the game nothing else matters.