I have seen a number of people complain about spending astral shards with no confirmation box and being tricked by the design in different ways
This is not accidental. Within design there is an area of user interface design called "dark patterns"
"A Dark Pattern is a type of user interface that has been carefully crafted to trick users into doing things, such as buying insurance with their purchase or signing up for recurring bills.
Normally when you think of “bad design”, you think of the creator as being sloppy or lazy but with no ill intent. This type of bad design is known as a “UI anti-pattern” Dark Patterns are different – they are not mistakes, they are carefully crafted with a solid understanding of human psychology, and they do not have the user’s interests in mind." from http://darkpatterns.org/
Companies like Zynga who litter Words with Friends etc with ads and upsell buttons are masters at this and all free to play games will eventually go down this path, as it is the path of most money (in the short term)
Expect this, and do not expect Turbine to add confirmations or anything that helps you not spend money
The new Turbine design decisions are not by accident!