Kingreaper
Adventurer
From a cynical point of view, perhaps this is intentional (especially with the change to the web only DDI character builder).
A possible underlying motivation is when a 5E comes along, they can remove the web only 4E DDI character builder immediately and replace it with a new web only 5E version. Anybody who still wants to play 4E, will have to resort to using either the unsupported "ancient" offline 4E DDI character builder or go back to doing character creation by "hand" from the 4E rulebooks.
Don't see that happening. Why? Because they have a choice: A) continue getting money from you for the 4E tools as long as you keep playing 4E
B) Stop getting money from you as long as you keep playing 4E, then have you move onto a different game, that may or may not be 5E (and if it is, they then start getting the subscription from you again)
Far more sensible to keep the tools online, and keep milking money out of you.