I think it's good to get some FIA attention here in the US. I just hope that it becomes successful and a decent series. Perhaps it will lead us to more American drivers in F1. Only time will tell.
I can totally understand the comment of the next step from karts. With Verstappen, the FIA has already started locking down on young drivers getting into F1 without much open wheel experience and this will help to alleviate some of that. Furthermore, the costs aren't that bad for many of the drivers competing on the national karting level. $200k+ budgets to race karts are not uncommon anymore. Six figure motor budgets for karts are unfortunately more common right now.
Plus, it's a prime opportunity for this to appear. The karting industry is very fragmented right now. There is no single championship series and, instead, a slew of independent promoters all trying to cater to a very small market. Many of your top tier drivers are getting frustrated by this fragmentation and are looking to move to cars much sooner than they normally would. 13 year olds in cars are becoming commonplace because most are realizing that they could be in car for the same price as racing karts on the national level....
Furthermore, karting in the US doesn't compare to overseas. In international karting events, American drivers are mid to back of the pack. It's a big deal for an American driver to score in the top ten. Not to say that a few haven't reached the podium, but all of them did it by karting in Europe a year or more to get there. NO driver has come straight from racing in the US to winning an international karting race.
With a US F4 series, perhaps, the American drivers can start racing on a similar package as the Europeans do and can start breaking into those series. We all know, save for Rossi just recently, that an American hasn't raced in F1 in a long time. A top American driver in F1 has been even longer.
Regarding price, from what I've read, the $115,000 budget includes the car, fuel, tires, practice and entry fees. Broken parts, extra practice and tuning will add to that cost. I would say that comparatively, it's still pretty reasonable in cost.
I've already heard of several karters looking into this for next year. I would not be surprised if over half of the initial field is comprised people straight out of karts. I haven't found the age restrictions yet, but if it's fairly open, I'd guess that at least a quarter of them will be under 16.
-Rob