New major gradle releases tend to break a lot of stuff which is a lot of work for the full-time expert build engineer you're going to need on hand to maintain the thing for medium or large sized projects.
Now I prefer to stick with Maven, it's simpler, safer, super predictable, and gets the job done just fine. Actually, the job is done better because it involves less headaches and time wasted on figuring out the damn build system.
Case in point: The length of the README in this "Modern gradle" reference repo - that's a lot of complexity just to get dependencies, compilation, tests, and packaging. I prefer to copy-pasta some XML fragments and move on to solving the high ROI business-value issues.
Edit: @bcrosby95 sir, if it were Maven only, you could shrink the document by ~75%, because most of the bullet points are trying to explain the sharp edges of.. gradle.
All my love to all of you folks, goodnight!