I felt the same way about the kit, easy to build but felt too modern.
I made some minor changes, as seen in pictures below.
The big thing was to increase the height, and length. I used 2" styrofoam to increase the height & length, and a summer condiment basket for the railing on the stern.
Suggestions of stuff I should have done...
I thought about redirecting the stairway towards the stern, then adding a rear compartment and smoke stack behind the cabin. However I ran short on time, so simply stuck the smoke stack on the roof of the bridge.
I also have air intake stacks, but again did not get around to adding them.
I also have, and recently found them again, crane/masts for the fore deck, that would help with a pulp look.
The pictures are shots of my WIP, for a Pulp Alley campaign.
Good luck with your project, look forward to seeing pictures!