From what I've heard you're better off building PIC time at your regional than jumping ship numerous times to say you flew this type and this type. Just the advice I've been given numerous times, not saying it's right or wrong. I have no idea what the legacies truthfully want. I've considered a lot of options as being young/single to explore the world, make more than a regional, and fly something bigger but nearly everyone gives me advice to just upgrade at my regional.
I do get why people think of certain airlines as stepping stones. For me personally based on the history of the industry, the ups and downs, I'd like to call my next shop my career airline. I feel like it's risky to bounce around and be at the bottom in case of a furlough, economy downtown, etc. I'm sure some will disagree with the logic, didn't mean to derail about myself but that's just how I take it when putting my apps out.