We don't need to do anything
specific, but merely have a system that's fair across the board. Perhaps Getz' system didn't take into account anything like tiering, which I use, and a method to determine first the distribution of ability, and then within that distribution, define the precise ability for those drivers.
Italian F4 has 5 tiers of driver. The last one is for Gentleman Class drivers only, so is essentially irrelevant to this, and we'll stick to the top 4 only.
Firstly, let's look at the distribution of fictional vs real life in the series. There are 21 fictional drivers, and 15 real life drivers. 5 of the RL drivers are Class G, and 1 fictional is Class G, so we're left with 20 vs 10.
Now, the following is a breakdown of the four normal tiers, and how may real life and fictional drivers are in each;
- Fictional 6 / Real 3
- Fictional 4 / Real 2
- Fictional 4 / Real 5
- Fictional 6 / Real 0
As you can see, for the upper two tiers, the distribution of talent is proportionally exactly the same as the overall spread of real vs fictional drivers in the series as a whole, whilst there are no real life drivers at all in the bottom rung of the ladder. Ergo, if it turns out there is a noticeable effect of fictional drivers being more successful than real life ones, it will be nothing more than a by-product of there simply being more of them on the grid.
The overall point here is that I agree with Simtek's assertion that karting is not necessarily a true indicator of probability for single seater success, and that you don't need to create special modifiers for real life drivers. There are a couple of RL drivers who had done F4 before in the series, and I RNG'd their tier within a range that specifically took into account their results at this level previously, but for the karting guys it was wide open.
As long as the base system for determining talent for all drivers in the series is properly designed and implemented, there will be an outcome of a fair, proportional distribution of talent between real and fictional drivers. All that needs to happen is for experienced series hosts to offer a hand to those who are new to the scene, and give some guidance of how to build a randomising talent system that will produce a fair and balanaced field of drivers.