My arc looks almost exactly like yours RS. Joined just after the allstar break in season 15 and was put into D4. Spent 1.5 seasons there, 1 season in D3. 2 seasons in D2 and now somehow in Naismith.
Kept pestering a couple of veterans for guidence along the way, I'm thankful to both of them for actually giving me sound advice instead of telling me where to go.
Hopefully I can stay past this season but I probably would have felt a bit more confident playing in the division with 3 other recently promoted teams rather than in a division with LP, PK, GS, Blenkinsop and yourself. Yikes. I guess we'll see how it plays out.
Anyways, good luck to everyone in Naismith this season!