On the "cool new stuff you could use with Holmes", here are a couple I've run across recently (both written for...

On the "cool new stuff you could use with Holmes", here are a couple I've run across recently (both written for Lamentations of the Flame Princess, but old edition compatible):

Tower of the Stargazer
- Exploration of a wizard's tower, with a good Swords & Sorcery / Clark Ashton Smith feel; could make a good tie-in to the Zenopus dungeon, if you had this tower out in the wilderness a few days' ride from Portown and the wizard a colleague or rival of Zenopus. The exploration and weirdness factors make it a good thematic match to B1 (with it's room of pools and wizard's laboratory). Also, like the early TSR modules of yesteryear it clocks in at a tidy 16 pages.  
Reviews:
- http://grognardia.blogspot.com/2010/08/review-tower-of-stargazer.html
- http://tenfootpole.org/ironspike/?p=1000
- http://dreamsinthelichhouse.blogspot.com/2010/12/review-tower-of-stargazer.html

Scenic Dunnsmouth
- A decayed town with dark secrets (a la Dunwich and Innsmouth of HPL fame). Could actually be used to design your Portown (if your Portown as a small seaside town rather than a larger city) or to create the town of Saltmarsh if you ran U1 in a Homes campaign (the investigative aspects would match U1's tone perfectly). Best part: it is set up to be randomly generated, which means uniqueness and good replay value; and you can also use it to design multiple towns (just changing the NPCs around). The random generation element meshes well with the design approach of B1, and the town-with-intrigues setup will feel familiar from T1.  
Reviews:
- http://therpgpundit.blogspot.com/2014/05/rpgpundit-reviews-scenic-dunnsmouth.html
- http://dreamsinthelichhouse.blogspot.com/2014/04/review-of-scenic-dunnsmouth.html
- http://save.vs.totalpartykill.ca/review/scenic-dunsmouth/
http://grognardia.blogspot.com/2010/08/review-tower-of-stargazer.html