Well we finished second last season so I think there were quite a few supporters who felt we were only a few players away. Problem was that we've had that feeling before over the past 10 years or so and those opportunities slipped away so there was a sense of deja vu. This was exacerbated by the fact that many people thought the players were a striker (very hard to find), a DM (Wenger seemed to not want to spend money on the position and as he had just bought Elneny would he really buy another?) and a CB (see DM and replace Elneny with Gabriel).
However with Xhaka and Mustafi both looking like very good buys and Sanchez playing well up front, our issues look like they have resolutions. Hence the optimism. Well done, Arsene.