I was thinking about how to improve the KTBH design so I built 3 small ones out of poplar measuring 19" x 19" by 10" tall with a 1" left entrance in each. Made the base 19" x 19" x 3/4" plywood so that they can be stacked and drilled six 1" holes so that bees can move up and down. Basically built 3 KTBH supers. Top bars are 1 1/4" for brood and 1 1/2" for honey with 3/8" spacers on just the ends (not running the length of the 19" bars) so that there's bee space for the ladies to move up between bars. My thinking is that the hive will be more modular (a la lang and warre) but will allow for better air movement and overwintering.
Wanted to get more seasoned beeks' opinions before i build refine the design and build more (for hiving next year). Am i missing something obvious?