Things I would like to move to 'debug' or 'trace' levels:
1. Reactor build order list: the order is always the same, so why print? if it's an issue of telling the user, in case he forgot to trigger a profile, then i think that in most cases it misses the target, simply because it appears so much that people just don't pay attention to the list
2. Reactor summary: showing successful modules means it's harder to find the failed ones. Just show me what failed.
3. Plugins usually print they are running in 'info' level. This is actually a tracing message as they will always run.
I know I can suppress these with '-q', but then it suppresses all 'info' messages, so that relevant information about actions taken (actions that change in each build) is not printed.