[badsectoracula]

> As someone who leads a team working on a game project using an old, custom engine we have a quiet desire to switch to a different engine

I'd be careful with this and make sure that if you do try a switch, you'd keep the existing tech alive. I've worked on a bunch of game projects in different companies and in pretty much every single one of them, both custom and external engines, people wanted to use something else.

One of my favorite jokes was that the biggest feature UE brings is that you get to blame Tim Sweeney when something goes wrong instead of the engine CTO :-P.