Oh good, I'm glad to hear it. :)
Yes, I think probably the best time to replay the whole thing will be either after Release XXII.5 — or, if you can hold out a bit longer, when Release XXIII comes out, because then when you reach the end of the replay you'll get some new content. :)
Hmm, you mean like a Sprite Gallery? That definitely could be doable. I'll add it to the list of planned content. :)