Your mid-last-century relic isn't comparable to modern stuff. I get what you're saying about potential hot spots with non-flat pans, but other than a wok I haven't had any trouble with my stuff. Maybe I'm more careful with mine and they stay flatter? Dunno.
The glass does stay hot longer than the grid over a gas burner, which matters when the stovetop is full and you can't move a pot off to the side as easily. As far as safety, gas burner grids hold plenty enough heat that you don't want to touch them.
tl;dr I wouldn't spring for the expense of running a gas line or a 220v circuit that isn't already there just so I could choose one or the other. But if they were both there and I were in the market, I'd prefer electric oven with something like this.
The glass does stay hot longer than the grid over a gas burner, which matters when the stovetop is full and you can't move a pot off to the side as easily. As far as safety, gas burner grids hold plenty enough heat that you don't want to touch them.
tl;dr I wouldn't spring for the expense of running a gas line or a 220v circuit that isn't already there just so I could choose one or the other. But if they were both there and I were in the market, I'd prefer electric oven with something like this.