As a lefty, I was always interested in their 1999 rifles since they had a good selection available in a backwards configuration, including the big bores. I'm not aware of any other company that has offered a budget friendly lefty rifle larger than a .375 in recent years. Unfortunately, I didn't buy one before they went under. I do hope that they succeed and eventually get back to the big bores and offer them in a lefty version again.
As far as the integral rail, I can take it or leave it on most rifles. I typically leave it and use Talley ring mounts. A big bore needs express sights though, and preferably a quarter rib, so I hope they offer a version without the rail at some point. If the rail is needed for fixturing, maybe they could add an operation at the end to machine it down into a pseudo double square bridge.