Personally, I find that such character development relies heavily on a lucky combination of skills. If there's no mentor and the right skills don't appear, the game will be a failure. Meanwhile, the development methods described here allow for any outcome.

What other lucky combination of skills are you talking about? I suggested taking Logistics (15%), Summoning (basic, 2%), Luck (15%), and Leadership (8%). And then, for the last slot, I offered some options. By the way, notice that 40% of the probability is already accounted for. Now, the probability of magic is 7%, and darkness is 3%, totaling 10%. Taking Logistics and Luck right away won't be difficult. The chances aren't that low if you choose the most popular skills.

Moreover, even if you choose Dire Ele and focus on constantly increasing Luck or not, those 4 skill points spent on Summoning will still pay off quickly due to the hero's increased development speed.