(I’ll preface this by saying I have the privilege of owning perfectly functional/good bikes and this whole thought experiment is absolutely an excuse to buy a new bike, not that I need a new bike per se.)
My current stable of road bikes comprises a 2021 Canyon Ultimate with 11-spd Ultegra Di2/disc brakes + Hunt 40mm Aerodynamisict wheels and a carbon Ritchey Breakaway with 11-spd mechanical 105 and HED Ardennes Black wheels (rim brakes). The latter was a COVID project to give me something to look forward to when travel happened again. When it did, the bike saw some great stuff: Mt. Baldy, Mt. Ventoux, Stelvio, Gavia, etc. The Ultimate is my daily driver for most rides (solo + club rides) with the Ritchey being the travel bike + higher winds choice (its shallower wheels do better in gusty conditions). I ride year-round to below freezing but don’t do rain rides unless forced to (e.g. events, while traveling, etc.).
While constantly obsessing over potential upgrades to both bikes, I started thinking about the possibility of embracing N-1 and downsizing from two road bikes to One Really Fun Road Bike with Two Wheel Sets (one deep/fast, one shallow for wind/winter) that could do fast daily driver duties as well as thrive as a travel bike. The latter requires external cable routing for my Transfer Case (and a preference to move to wireless from the Ritchey’s mechanical shifting, and a shift to disc brakes) and the former means I don’t want something noticeably ponderous or dull. I ride about 4-5 times/week and ~10k km/year. 90% of it is on “good” or “decent” roads with travel being the wildcard where I might encounter less great tarmac (think Northern California, UK, etc.). New bike will run on 30 or 32mm rubber and with either 105 Di2/Rival AXS or Force AXS/Ultegra Di2, with a slight preference for SRAM for the ease of packing/unpacking while traveling.
I’ll hit 50 in < 2 years and am lucky I’m not (yet) dealing with chronic aches and pains. But I don’t/won’t race and don’t need/want to max out aero optimization at the expense of comfort or utility. My biggest thrills are travel riding and Bid Stupid Rides (fondos, brevets, etc.). So I’ve gone down the rabbit hole looking for a unicorn bike that has external routing and practical travel features (top tube bosses, internal storage, and/or bosses under the downtube) but can still be fun/competitive on a “Worlds” full gas group ride (I have little natural athletic ability but can hang with A rides). That’s sadly a small-ish group of options with Big Internal Routing increasingly ruining everything these days 
Would love all instincts and perspectives on the following options, or other options I’m missing and should include. (Notes: not looking to go full custom for budget reasons and I will solve final wheel selections in a separate obsessive-compulsive exercise; for now, don’t worry about what wheels come stock with these builds.)
1) Fairlight Strael. If the reviews are to be believed, this is the greatest all-around road bike in the history of bikes. Extra bosses on down tube very useful to me. Slightly concerned about extra weight with a steel frame but I realize that’s largely my bias and likely not an actual drawback in this case. I have work reasons to be in the UK and could potentially avoid US tariffs by bringing an empty bike case on the way over and traveling back with a Strael inside 
More expensive than options below but not radically so. Wins on vibes.
2) Lauf Uthald. Like the bit of aero Lauf were able to engineer on the front end and the good value for money. Wish there were extra storage solutions/bosses. I live in the Mid-Atlantic of the US and could easily justify a road trip to Harrisonburg, VA for a test ride.
3) Salsa Warroad. Would likely build this up rather than buy a full build (frameset is on sale currently) and in contrast to the Uthald, it has loads of places to bolt on bags and cages. I own a Warbird for gravel and am slightly concerned the Warroad, while likely faster, might feel too slow for “regular” riding and training. But it’s awfully practical from a travel bike standpoint.
4) Cervelo Caledonia. The base models (not the “-5” line) still come with external routing and I like the top tube bosses. Rest of the kit is underwhelming and would require some upgrades (bars, seat post, etc.).
All the geos above should work for me (with the right final set up, of course) and are “close enough” to the Ultimate and Ritchey that I shouldn’t be dealing with major fit issues [knocks on wood]. Warroad is the most upright and has a longer stack than I am used to, however.
Thanks in advance!
PS - Goal would be to keep N-1 bike price around US$4-5k range (setting aside extra wheelset cost).
PPS - Other things I’ve considered but not included here: previous-gen Aethos (more aggressive geo then I think I’ll want, no extra storage/bosses), and low-end BMC Roadmachine (great storage/bosses situation but can’t get over the silhouette…and hard to find the base builds with external routing).
but I’d think about whether each bike you have actually brings you joy, and whether you want N+1 instead of N-1.