As with anything else, it depends on what you wish to achieve. For FPGA programming it worked great. LabView by design is fully parallel, which is exactly what

As with anything else, it depends on what you wish to achieve. For FPGA programming it worked great. LabView by design is fully parallel, which is exactly what you want in this case: it's like having 1000s of small, independent CPUs. With VHDL it took an order of magnitude more time to achieve the same. Also it was easy with LV to tweak the low level details until everything fits in the 3M or so gates available. Other use case would be when the customers of your app are only engineers who know LabView. They (might) accept the limitations in exchange of quick tweaking here or there. For anything else I would avoid LV. Larger projects are very hard to maintain, the declarative programming will scare most of the developers away and I could not find any advantage over mainstream programming languages.