I fully support OzWookie's comments. Straight ports from FSX are easy but heavily lacking in pretty much everything. A full conversion, with necessary improvements, takes a long time - three months for my F-15 Eagles so far, and they're not quite finished yet. More complex aircraft would of course take even longer.
The results are worth it though. I see no real difference between the thousands of purposefully freeware-developed aircraft for FSX, and the ports now appearing in MSFS: for those who have limited finances or simply don't want to pay, ports provide a welcome change to the sim's stock aircraft. A fully native aircraft though is, in comparison, worth its weight in gold, just as it always was, and will be sought out by fans of that aircraft type. The more there are, the more choice there will be, and the more users who will come to our hobby when they find out their favourite aircraft has finally arrived
Yes, Yes...but the REAL question is, when is that YT-1300 going to make it's debut????