It really depends on if you can live with the OOTB functionality. For me, it was important to go beyond the out of the box to improve the user experience.
If you are living in the web app world and want invest the time, it seems that it would never hurt to have some front-end coding skills. At the very least, it will open up the door to getting a lot more mileage out of Kendo UI or other JS libraries you may want to leverage.
And if you don't, I'm always looking for more business. 🙂