True, question is how good of a king will he be in Inquisition based on this choice?. Just have to wait and see i suppose. So hard to make a canon save, hate it.
This was a key reason for me to pick him:
Slave trade stopped:
Alistair is king
“With the slavers shut down in the Alienage, the lot of the city-born elves improved for a time. The new king even named the local elder to his personal court--a scandal amongst the humans, but a sign of new hope to the elves.”
Alistair is not king
“With the slavers shut down in the Alienage, the lot of the city-born elves improved for a time. A food shortage years later forced Queen Anora to come down hard on elven rioters, an act not quickly forgiven and a sign that tensions between the elves and humans were far from resolved.
If this Alienage problem is allowed to continue, then I thought it would be Ferelden's weak spot. An enemy could use the elves against them in terrorist plots.
Now that I said this the endings I heard were just rumors and I guess you should go with the one you like the best.