Currently FME Desktop allows only to enable or disable statistics logging completely.
I think it would be nice to be able to distinguish between "Transformer statistics" and "Reader/Writer statistics":
Some transformers (especially when used with grouping or custom transformers) are very verbose with logging and it would be nice to silence them without loosing the reader/writer statistics in the logfile!
We have experienced logfile sizes up to 600MB ;)
Ping @DanAtSafe