A couple of pieces of advice:
Keep in mind that it will probably take 3 years to really be ready to sell it and you are trying to compete in an established market, so you have to have compelling advantages over what will be on the market 3 years from now, not what is out there today. The competition will come out with new stuff by then and you don’t want to be viewed as having old features when you launch. So think about the current trends in consumer preferences.
What people say they want and what they ultimately buy are often two different things. Think for yourself critically about what you think the market needs and people will be willing to take a risk on by buying your product instead of the tried and true.
Be realistic about the business case. It’s incredibly hard to get OEM business because the big bike makers buy entire packages of parts (drivetrain, brakes and usually one or more of wheels, fork/shock or cockpit) from Shimano or SRAM. Lately Shimano has been pushing their PRO cockpit parts and Fox combined Easton/Race Face to better compete in the OEM parts package business. The small bike brands use Shimano and SRAM because they don’t want to give people a reason not to buy their bike. So at first you will have to survive on sales to people that are building their own bikes from a frame set (very small market) or upgrading an older bike (bigger market).
Based on the above, maybe you should start with offering things the big guys won’t, not because people don’t want it but because it would hurt their profit margins. For example, the big guys force you to upgrade your entire drivetrain, including shifters, just to add one more gear because they keep changing the gear spacing and cable pull to derailleur movement ratio. If you made a “future proof” shifter that could be adjusted or cheaply upgraded to change that when someone wants to upgrade their bike, it could have good appeal.
Also, SRAM 12 speed gravel gearing is so disappointing because they only offer a few cassette sizes 10-33 and 10-50. How about a 10-38 or 42 to not have such big jumps between gears?