What purpose are you thinking about? What would you consider too frequently? When it comes to panels for case work, I check the squareness of most squaring crosscuts and many of the to-length crosscuts with a large square. I enjoy it actually. And I do it no matter what method I'm using because my methods don't include anything that would remotely impress an offshoring consultant. So, for me, productivity is secondary to having a good time. I'd check a base cabinet side for square even if a ShopBot handed it to me and said, "Here, this is prefect."
Your purpose requires that you not check crosscuts for squareness before assembly? Sounds like a manufacturing environment. That's pretty demanding for anything short of computerized stuff and I've heard that even then sometimes the robots get nervous and sneak out a square when the programmers aren't looking.
And what would the next best thing be? A vertical panel saw? A sliding table saw? A CNC router? I wish I could convince myself I needed a sliding table saw, though I don't know where I'd put it. Maybe under a tent out back. Do they have 3 phase extension cords? As it is I have a hard time convincing myself not to downgrade my cabinet saw. I haven't crosscut a full sheet of plywood on my table saw in four years. Wait a minute. Wait just a minute. Come to think of it I've NEVER crosscut a full sheet of plywood on the saw I have now! So what's the point in that long metal tube thing sticking way out on the right? That's not part of the fence is it? And that wooden part behind the tube that's attached to the cast iron? That part there with the spindly legs at the end. What's it for? I've never used it. It's totally useless. Well no, not totally, I do have some boards sitting on it that otherwise would have to be on the floor. (This really is true, at this very instant there are a bunch of boards on the extension table and they've been there for weeks. I should include a photo.)
I can produce parts cheaper than I can source them in the quantities I need. And these parts are made with my TS55, guides, MFT, Domino, hole jig for my 1400, and all the little gizmos for edge banding that the FastCap guy tricked me into buying. And the sources I've looked at for flat packed case parts employ so much automation that I don't think humans are allowed on the premises. Plus, I'm buying 15 to 25 sheets at a time. They are buying whole forests at one shot. I can hear the exec on the phone now, "Okay we have a big run of frameless parts to make, better go ahead and buy Oregon. No, just the western half for now."
Give the MFT a try. I don't think there is a "next best thing" at anywhere near the return on investment . Including the other track saw systems. And here's something else to consider. If the MFT bridge and fence does happen to work itself out of square it's so easy and fast to fix that a CNC robot who only knows how to go up and down and left and right could do it.
