Precisely.
The thing is this: if you believe 3E and 4E are good systems despite their flaws, then I'm not sure why you would want or need a new edition as replacement. If you believe that 3E's and 4E's flaws render them undesirable, then I'm not sure why you believe 5E will be any different. Which brings us to...
In my opinion, it does nothing that 3E and 4E don't do, and 3E and 4E simply do it better. 5E is redundant with earlier editions, and does less good a job then they. Based on the playtests so far, I wouldn't mind playing 5E (although I wouldn't prefer it), but I'm not seeing sufficient added value to warrant buying it.