Every edit action in Lightroom is recorded in the History for that photo. If I "try-on" various settings, say changing White Balance through the various modes to find one I like, it creates an entry for every setting I tried. When I finally decide on the setting I like, should I worry about undoing all the previous actions (ie. to simplify/clear the history), or just go with the final setting?

Somehow it bugs me to have all those entries in the History, especially since none of the ones preceding the one I selected have any meaning to me, other than as an experiment. I could see that having the history would be good if the intermediate steps were relevant

I suppose it would be great if Lightroom were smart enough to see that the last N changes were all to the same setting, and then be able to automatically or manually collapse that stack into a single entry in the History.

Ultimately, I can't imagine that having lots of history steps adds much in the way of file size to the catalog, but are there any other issues that I should be concerned about? (ie. slower rendering speed?)