I disagree. I cannot see how going out of your way to make the Templars help you after they made it clear they had no interest in joining you only to find out they are destroying themselves from within is in anyway "objectivly better or neutral" than going to talks with the Mages who invited you and taking on a hostile foreign presence. And STORY wise the Templar quest adds NOTHING new.
Therinfal Redoubt is a Seeker stronghold. So you are authorized to be there, unlike Redcliffe Castle. There is also suspicion that Lucius was involved in the Conclave explosion. And some templars want to join you, but orders prevent them. So gathering nobles to help you stop Lucius makes more sense than going after a time-bending mage in a fortified castle you have no business going to. It is also stated that Ferelden's crown is going to Redcliffe to resolve things. This leaves you to settle things with the templars.
And the information we learn on our enemies next move is fact not supposition. There is no objective comparison.
You learn the next move at Therinfal as well. The problem with IHW is you go to a crap future that you helped cause by your failure against Alexius. Then your companions inform you of future events, but not anything else, like who the Elder One is or that he has a dragon.
Interesting. I see so many using the anti-Magic point without the weight of in-game history. Templars do not completely negate Magic. They have the ability to weaken and suppress and history shows that this is not always enough to defeat Magical opponents. It is not rock-paper-scissors, Templar beats Mage, you only have to look as far as DAI itself to see this. Take the War itself, pre Redcliff.
Fiona admits the mages are losing. The only survived that long because Ferelden's monarch(s) granted them asylum. Templars > mages. That's a fact. You can argue that their victory over a mage is not assured, but it is highly likely, especially in large numbers.
The Mages were fighting toe to toe with the Templars for a full year before being aided by Ferelden. Sure, you could argue that the Mages would have lost but the anti-Magic factor would not have been why. See the Hinterlands, an arena of battle in which the Mages where winning.
How were the mages winning? They had protection through Arl Teagan. And the rebel mages were hiring sell-swords. Without those the templars would have crushed the mages.
Also take into account that for many months the Templars where taking their orders from a Demon, disguised right in front of them.
Not necessarily. We don't know when Lucius transitioned everything over to Envy. Lucius may have been the one who got the ball rolling, while Envy just maintained the momentum now and then afterward. Denam was also crucial in carrying out the deception, and he was human.
As for history, just look at the conflict between the Chantry and Tevinter. Several times the Chantry set it's anti-Magic army at Magic-roided Tevinter and several times they utterly failed.
Because Tevinter has hundreds of thousands of soporotti warriors and assassins, as well as home field advantage. Also, notice how the mages in Tevinter react to true templars if you have Cullen send them to protect Maevaris.
They can't control time to that extent. That much we know just from going to Redcliffe and speaking with Dorian... and still being alive after going there.
Unless he can, and simply chose not to because Redcliffe Castle is where he was strongest.
It should also be Ferelden's responsibility to secure its own territories, but there we are, securing it for them because they can't. If they laid siege to Redcliffe, they would probably lose. They do lose in the dark timeline.
Not so. They secured Redcliffe just fine, provided we do not interfere. If we do interfere, THEN Ferelden fails to defend its lands because no one is around to close the Breach. What likely happens after Alexius' time spell hits Dorian and the Herald, is Ferelden's soldiers arrive, Alexius flees in the confusion, and then later once the main Venatori force arrives, they retake Redcliffe Castle. The reason they don't in the templar path is because they attack Haven instead of Redcliffe.
"Shouldn't take long at all" meaning what, exactly? The families would have to receive correspondence, a date would need to be set, and then after however long that takes you still need to travel to Therinfal. A trip from the Frostbacks (Orzammar specifically) to the Circle Tower takes weeks. From Haven to Therinfal is over five times that distance.
You're comparing rocky terrain to smooth terrain though. Haven to Therinfal might be a longer distance, but if there is a road then you can move faster than you could on uneven terrain. Besides, it works out in the game. So its a moot argument. You can contact the nobles in enough time to get to Therinfal and recruit the templars before Ferelden's crown arrives to expel the mages.