In simulation and stat log, I can see request names, time-stamps and statistics are collected. However, usually for the first time to try a simulation, a user may want to check whether all requests are correctly sent and response accordingly. In Jmeter, user can add a listener “view result tree”, start running and then check all requests/response in that window. Does Gatling have similar function built-in? If not, a workaround I can think of is to add log functions in proper locations of script, and the downside is user may need a lot of work to modify the script.
You can see the requests and responses in the logs, see conf/logback.xml: https://github.com/excilys/gatling/wiki/Configuration#wiki-config-files
We plan on working on a kind of debugging tool in 2014.