Please don't. To make an all inclusive box would be bigger, more complicated and expensive and not really sound the same - it could be another product.
Each product has a specific purpose just as the Vampire Slayer and the Green House to fit different players needs and budget. I personally find more value in @Sushi Box FX simple, well executed, fantastic sounding specialty boxes instead of some chock full of nuts junk boxes so many call preamps these daze.
I hear you, but UA isn't that much bigger than SH, and is only $30 more. Adding a toggle to bypass the tone stack would 100% turn it into a Space Heater. That would be zero differences between the two. UA is just SH with the original PA tone stack. Period. Same circuit. Also Since the release of UA sales numbers have been steadily dropping for SH. I'm going to add it to my "evaluate" list, but SH may be going away.
Vampire Slayer is toast. It's a great buffer, but since its introduction to the lineup several months ago, I've sold maybe 3. Not worth the time it takes to keep it in the lineup.
Wrecking Ball may disappear as well. It's a killer circuit, but it's the same size and same price as Smoke Signal, but with less features, so I don't expect it to really compete long-term. Plus even before Smoke Signal was introduced I only sold 1 Wrecking Ball.
Also looking into getting rid of Sunnday Drive. There is one order for one in November, but prior to that it's been a few months since I've had an order for one. So while it's a great sounding preamp, I'll probably be letting it go.
With the Westinghouse fiasco I'm also thinking about letting go of King Nothing and Deep Dish as well. King Nothing is neat and has sold fairly well, but it's a very-slightly-tweaked clone. I've been rationalizing that since it's the v2 version and Kingsley only sells the v3 that I'm not taking sales from the creator, but that's a shallow justification. Deep Dish is a little different since I dropped a tube and added the gain reduction indicator, but at the end of the day it's the same story, I have a modified version of something that's competing with the original which is still in production.
I have a couple more in my "evaluate" list, but these are the ones at highest risk of being discontinued. Right now with Finally and Sashimi included I offer 17 models, and that is a lot. I've been thinking for a while that it would be nice to only offer things I feel really good about. Underground Accelerator is a prime example, it more or less started from the Particle Accelerator but evolved over time into a product I'm extremely proud of and that people like. I want more of that and less of "anything and everything under the sun that has a tube in it."
Anyway, Tuesday morning ramblings. I need breakfast.