~edit~ did not realize a better solution was so close. For debugging purposes, using a constant like Code (CSharp): [Burst(Debug = !Const.EnableBurst)] on jobs is a very handy pattern to use as it easily allows you to disable groups of jobs from the burst compiler without having to go through and comment them (or disabling burst project wide which just isn't an option anymore when you get a huge project.) This pattern was also usable with Lambda jobs, by doing a similar Code (CSharp): this.Entities.WithBurst(Consts.EnableBurst) but has been marked as obsolete pending removal. A similar pattern can still be achieved with precompiler defines, but it's just much more tedious and makes code very ugly.
In 1.3.0-preview.4 they added possibility to debug burst code directly without disabling burst at all. It's suitable for you? (But currently only for Native Debuggers) (For debugging of course, for build defines it's still useful patterns.)