If you are looking for features outlined in the connect site and would like to see this improved, please feel free to visit these links and vote for the feature as this will help Microsoft to prioritize these items.
1. Configurable value for the number of report executions to keep in the history (for back purpose)
2. Use HTTP POST for Go To Url actions
The above requests were related to SSRS performance degradation when using Go To Report actions connect article.
[All the posts are AS-IS wihtout any warranty]