I completely agree that the Klipsch Heritage line are gorgeous. I've owned each of the speakers you mention, as well as LaScala's and all were finished quite beautifully, and lend themselves well to refinishing. While you are refinishing them I'd suggest swapping out the stock wiring harness with some quality silver wires like DH Lab for a big difference in performance. Also, I've found the use of various types of weather-stripping and sealant goes a long way in sealing up the enclosures on the Heresy's and did help the bass response. On the Forte's I think you just have the drivers to seal up. I did replace my Heresy backs with 3/4 inch MDF which also helped bass, though doesn't look quite as integral as the original plywood back. I haven't seen them in person, but by reputation and his chosen profession, Terry Cain, of Cain & Cain certainly would be one of the finest examples of applying master carpentry skills and solid wood construction to speaker building. Those who have seen his speakers have said they are second to none in construction and finish. Silverline also comes to mind as having an amazing level of finish and build on their speakers, as does Soliloquy (I currently have a curly-maple pair of 5.3's that are impeccably finished and gorgeous to look at).
Marco
Marco