It probably will be an unpopular opinion, but it's a legitimate one. Personally, I'm optimistic, I have the sense that he's coming back with a mission and there will be an attempt to adapt to what he brings, in the way SAF often adapted our playing style to his strongest player. He could do for us what RVP did in his first season, and we knew that was a bit of a fix.
If someone had said to me a couple of months ago, should we go after Ronaldo, I'd have said "no, that's going back to the past for nostalgic reasons", but the way this has played out makes me think the sheer fact of him being here will lift the team and the supporters. Commercially, it should pay off as well.
The bigger concern is whether it represents a failure of rebuilding with a new, younger generation of players by falling back on older, proven players, and some people may interpret Dan James' departure as a sign of that, but if CR helps us over the line with titles or trophies while the youngsters come through, it will have been worthwhile.