I don't know where to save money. If you don't fail a course, even not if you progress directly, this means you can do the dives on the higher level if you want directly and have more fun. But you ALSO have the option to do the dives on the lower level. There is then a choice.So one of the things I like about GUE is their recommendations when preparing for the next class is to practice the heck out of the previous class. They are truly a progressive agency, rather than having haphazard con ed courses without always clear progression. Having minimum dive requirements and feedback is a huge service to their customers. In the end, divers save time and money with having much higher returns on the time and financial investment put in.
There are no stats that prove that do dives in between are safer. The other strange thing is that there are also no stats that proof that if you go diving on full cave level with only cave1/intro to cave that then more accidents happen. If there are cave accidents in most cases it are the non-cave trained divers, or it are full cave trained divers. You almost never hear it are the intro to cave/cave1 trained divers. But you hear others judging about experience of divers if something happens, even if they are not there, they give their opinion and sometimes based on nothing.
With this I won't say that it is an good idea to skip the full cave/cave2 level, but it means that if people decide to go diving beyond certification levels that in most cases they have just some brains to think about doing that and about the risks (and of course there are books who can theoretically learn you cave diving, so explain all the theory about navigation in caves and how to do this).
And remember divers are human, so some divers also forget the things learned in a course because it never happens to them and they don't want to practise it again.
Further, there is no cheap technical diving, but it is a big difference if you pay 2000-2500 for the complete course to cave2/full cave, or it is the double price. Not every diver can afford it. Then you can say technical diving is not for you, but also here, there is no proof that the cheaper courses were worser.
I am not the cheapest, but also not the most expensive instructor. And I really understand that people want, but sometimes don't have unlimited money. I also don't have that.
If you don't have the money to go to Mexico or Florida for cave diving and you live in Europe, the cave1 or intro to cave level is really really limited here. So then really the best way is to move on to full cave without dives in between. If you live in Mexico, I can understand why you stay for a while on the intro to cave level as there is a lot to see on the mainline. But, I think the gasrules are broken then too quite easy.
And what do you think then of taking a camera with you on a cave dive, can this be done at cave1/intro to cave level?