This post is not explicitly related to DOTS, but that what I work with atm.
It was a nightmare in previous Unity versions, when had error and couldn’t simply click on the relevant line of dumped error log from the stack.
Now with the new Unity 2019.x I have noticed by chance, we got actually clickable log links, allowing finally quick jump, to relevant line of code. Amazing 
Previously and even with Unity 2019, I used Console Enhanced, to compensate lack of that feature. Worked well.
But I am glad, we got that by default now. 
Do you have some other tools / needs, which helps / could help you in DOTS dev and debugging?
Sure Entity Debugger is still to improve, but we getting there on that part.