Yeah, I pretty much feel Bohemia use DayZ as a testing ground for Arma. The success of the DayZ mod was an accident. At the time in 2012 it was massive but also very buggy and players asked for a standalone version of the game where the bugs could be dealt with properly. Bohemia never had an interest in a zombie survival game but it sure has been a massive earner for them.
There's a small dedicated team working on it but it blows my mind that only now is it starting to be as good as the mod was. But only on modded servers. The vanilla game focuses too much on survival and not enough on the mechanics that made it such a fun and thrilling experience.
There was an excellent hero and bandit system in the old mod that I would love to see come back.
Bicycles were promised, and they've basically put it on the back burner as the driving system in general needs a lot of work still.
The guy who modded bikes in did it very cleverly, it's far from perfect, but it does the job.