[tuukkah]

I think the shortest/fastest path can have value even if you didn't learn much yet, because it can provide an end-to-end platform for learning: something to show and discuss with stakeholders and potential users.

After you have that platform, the next target can be the biggest uncertainty / hardest problem that you need to solve to achieve an MVP. "We have X, can we get to an MVP?"

(After you have an MVP, the hardest problems may still await you but you can prioritize based on what increases value.)

[Kalanos]

right, you might get an "actually, how about X?"

[tuukkah]

Yes, or even more likely Y ;-)