I think Believe Bro kinda answered this for you. The chance of getting 4 days off in a row is really low. This month I had a group of 4 days off, but magically a reserve day has been dumped in the middle of them. And the roster is already for over 99.5hrs...so would be illegal to fly on this day anyway without destroying the remainder of the roster.
Rules re leave have also changed. We use to be able to bid for days off before and after leave, and it worked. Recently however no days off are being given prior to leave being taken, and only one day off is being given at the end. Prior to my last lot of leave I was given three days off, an then a trip which returned at 2200hrs on the evening prior to my leave commencing. I was in the top bid group that month and had bid for the days off....go figure.
So to answer your question, can commuting be done...well yes it can, and is being done. But it is very hard work. If you are willing to just take a week of leave here and there, and not around the peak leave times, you should be able to get home. That is if you are lucky enough to be by a computer when the leave bid period opens, as the days are eaten up pretty quickly. Realisically though, I think you should not count on the extra days off before or after, as they probablely will not happen, but if they do they will be a bonus.
Remember that over here you have to write and get permission to leave Dubai on days off. Usually they say ok...but on occasions they will say no...has happened and will happen again.
Hope this helps.
Don