great
So, basically, it's your opinion that we desperately need to have our applications broken every few months.
That's downright awful.
More to the point, Firefox isn't actually developing improvements any more quickly. It's just incrementing its version number. Changing the number on the packaging doesn't make the software better -- but you are obviously snowed quite effectively by the marketing BS.
. . . and, even worse, there's no migration grace period during which arrangements can be made to avoid disruption in usage due to extension breakage. It's "switch now, or get owned by the next malicious security cracker to come along". That's the opposite of customer service.
Your ideas sound visionary and forward-thinking for about a hundredth of a second, until one realizes that you haven't actually thought about what you are saying at all.
The biggest changes I've seen with new versions of Firefox are significant damage to stability for several years, anyway. Perhaps you can tell me how making the browser more prone to breakage is in any way the kind of advancement you seem to think is so critical in the rushed release of new browser versions.