So much of this depends on where the OP is in his cycling journey.
It is easy to assume the OP has “not” already maxed himself out from a physical and positional perspective and is looking for whatever additional advantage that is still available.
If it were me, I’d probably make the changes if that is what I wanted to do. Regardless of the real life results, there is something psychological about making improvements on a bike that is motivational. There is something about making changes and being amped up to get out and ride.
If the OP has not looked in to getting fitted and doing exercises to possibly improve flexibility that would also be a good area to focus on.
John