Andy, I'm quite liking GOTHAM, watching at US speed (was the third episode the one with death-by-weather-balloon? Thought that was ace!) so I'm a bit ahead of you... to be honest, if it hasn't grabbed you yet, I'd probably give up. It doesn't change or accelerate significantly.
I'm in the same boat about HOMELAND. Loved the first 2 series, third was a bit iffy but gave the new series a try but it's going nowhere, IMO, purely and simply because THAT character has gone (no spoilers here!). It's now a case of making a show purely because it made a shitload of money before and they want some more... there's no real reason for it to exist.