On the Full backtests,
There is one custom graph and 2 others, Daily returns and Transactions
for the most part I havent considered Daily returns useful. Transactions, a may be.
Which brings me to my suggestions,
1. It would be good to allow customizing all the 3 subgraphs. And have some default graphs like you have now, say transactions and Daily returns.
2. Allow for embedding some buy/sell signals(up/down arrows) like at the link below in those custom graphs.
Probably also allow them in main graph as well.
http://3.bp.blogspot.com/-ogiA53ksZB8/T1TVUtzUD-I/AAAAAAAACEA/KJGseDNNL4o/s1600/XLE.JPG
Sarvi