I for one am happy the Rams released Havrisik. Admittedly there aren't any great candidates out there. But yeah, I see Maher as a slight but significant upgrade over Havrisik.
I think Havrisik's FG% stats are inflated by going 8 for 8 on chip shots of 20-29 yards. Lucas was a dreadful 2 for 6 from the crucial 40-49 range.
By contrast, Maher was a respectable 7 for 9 from 40-49. And most of his misses came from 50 yards or more (Maher was 3 for 7 from 50+). Lastly, Maher has only missed one XP, while Havrisik has missed 3.
I think Patterson would be yet another step up from Maher, and I hope they sign him for the playoffs. But for now, if the Rams have to convert a crunch 45 yard kick, I'd much prefer Maher over Havrisik. It's truly a mystery to me why McVay stuck with Havrisik for so long. The evidence was overwhelming.