With the BfA version of the site, we plan to allow multiple sets of gear to be saved per spec. It requires significant UI updates, which is why we are doing it with the BfA redesign.
Also note that using a simulator to simulate a list of gear combinations, and Best in Bags are not the same thing! We will have some blog posts coming up soon that describe the differences, but here’s the short version:
There are usually several million relevant combinations of gear in your bags. Simulating all of those would be expensive, and take a very long time. So when you do a simulation-based approach, you use your best judgment to pick a small subset of those combinations, usually just a few hundred if you don’t want it to take too long. But… how do you know that one of the other millions of combinations that you didn’t try is better? You don’t really – the result of your simulation is only as accurate as your personal ability to guess which subset to examine.
Best in Bags is an algorithm that will search all possible combinations, and do it extremely quickly. Just like with your simulations, it cannot guarantee a perfect answer, but it has a high probability of finding a better answer than most people would get via setting up a simulation. And it does it in just a few seconds, with no significant setup required.
Also note that if you really do like the simulation approach, the AMR simulator can also do batches of simulations and show you the best performing result of the setups that you told it to simulate. We have a significant UI update for the simulator with BfA that will make it much easier to use. While we don’t recommend using simulation over BiB (mainly because it is so time consuming, and why do all those simulations when BiB is based on millions of simulations that we already did for you?), we know that some people just like it. And that’s totally fine – which is why we offer our simulation client that is integrated with our website, so that you can use the website to run as many simulations as you want for free.