Sounds like they took your concerns on board. The ratios sound better now with 10-2 (+2).UPDATE
Talked to the diveshop and very politely shared my concerns.
From here on out there will be TWO instructors, plus at least 2 Divemasters.
They said I can come in early before class or midweek to ask questions or work out of pool with any gear I want to check out in more depth.
And if after the second course, if not satisfied, can roll me into a private lesson for more personal attention and only pay the difference to upgrade to private.
Take advantage of the use of the pool/ asking questions. Just remember to take things in small chunks though and not try to take everything on board at once. Using your burger analogy, you don't become a chef capable of turning out the perfect meal every time by reading a book and then doing it once. It takes time, patience and practise.