Awesome, but I have a question. Is Dell Conagher's (TF2 Engie's) dad "Fred" from the comic, or someone else entirely?
This is what appears to be a picture of Dell Conagher with his dad, at the very bottom of the image
This is the most recent picture of the TFC team in their prime, from the Catch-Up Comic
This is Fred, the TFC team's current Engineer
The two don't resemble each other at all. One's fairly fit, with fully functioning legs, the other is pretty fat with robo-legs. Granted, it could be they're the same person, and the fit version was just Fred in his prime. But all the other TFC Mercs in the Catch-Up Comic look pretty distinctly similar to their older selves we see in this new comic.
Except the Engineer.
Catch-Up Comic Engineer looks distinctly different from Fred, and all his teammates surrounding him. Note that in 2nd image, he's the only one not wearing camo fatigues and he looks as though he belongs more with TF2's art style. Furthermore, Fred doesn't seem to know anything about Australium or life-extender machines, which is something that any Conagher worth his salt would have at least heard of. Probably fairly safe to say that Dell Conagher's father was the original TFC Engineer. He did not (for whatever reason) come back to work for Grey Mann, just like the TFC Medic. The team solved this by hiring Fred, who's a good Engineer that simply doesn't have the depth of knowledge the Conagher family has. The one problem with this is that Virgil (Classic Sniper) says he's worked with Fred for years. Maybe put this down to Dell's dad retiring early and being replaced by Fred in the 40's or 50's?