I voted for a debugger. Yes, if I only want to trace variables I use textBox or Chrome console, but the real benefit of using a debugger is to step through events one by one and see the state of the SOL and variables at a specific moment in time.
I really don't like the way search function works in C2. I want to see all the events, not filter them, instead I want my keyword highlighted.
Also a good option will be to highlight all the instances of the object or variable on which i clicked.
I had almost give up on C2 only 1 month after purchase for the lack of a debugger, but now I see that Scirra team is working real hard to satisfy most of us.
I actually do it using textbox, where is the difficult? And I think the most part of the users from this community never did more complex games than me, using simple textbox.
Please, don't throw so far the textbox if you're unable to extract the best of this feature.
Per happen, will be nice to have this feature alive someday, to help the newer users.