Yep, Ramsey has a terrific final ball. Above all I think he creates a lot with his movement though. We get a bit static with Santi sometimes. He'll spot the initial pass but he won't move up to offer another passing alternative once he plays it. He won't make any runs forward ahead of the ball. It's why he hasn't scored a goal from open play in like 18 months now. Özil and Giroud combine well with Ramsey because he's agile. There's always someone to put the ball to. He's got the guts to actually go for it too if he spots an opening. Frustrating as it is to watch when he's not on song and fluffs clearcut chances in front of goal, those are almost always chances we wouldn't have without him in the side.
This was written prior to the Chelsea game, but it highlights some of his contribution: https://blog.playtogga.com/aaron-ramsey-arsenals-important-midfielder/
In the seven matches since being reinstated in the starting XI, Ramsey has three goals, two assists, 10 shots on goal, 12 chances created, 15 interceptions, and 12 tackles, showcasing his ability to influence a game at both ends. Arsenal has shot to the top of the Premier League over the stretch, going 5-2-1, with Ramsey averaging nearly 18 FPL points during the run.
He's done this while playing next to Flamini, and during a time when we've missed both Sanchez and Walcott for the most part. He's barely had a breather too. He returned from a long injury absence and Wenger just threw him on and kept playing him.