So far been doing the game on tactician as a solo character lone wolf and am around level 12 now. Some fights are ridiculous due to gains, especially with boss characters as the stats were already high to begin with. It was ok until I got off Joy, the stat increase wasn't that out of wack but now it has gotten a little silly.
I like many others was expecting a similar thing to EE with new mobs and the occasional skill here/there, hardest AI, etc. If its just a +50% armour/hp/damage boost across the board and nothing more its quite the let down and I would change the difficulty back down if I could.
I think the extra aura are tactician only since they appear out of nowhere when the fight begins (like the executioner having absolutely no buff but the moment you start the fight, Evasive aura pops up and force you to use AoE magic and CC to kill her)
Also the bloated stats aren't that ridiculous when you consider how bloated your stats are going to be with legendary gears you can find from just shopping. The game pretty much scales your enemies stat up as much as you gain from buying items. Most enemies in the level 12-13 zones on non-monster in tactician still get gipped in highground 4 arrows. You're gonna enjoy it even less when a single archer can gip magisters and undead before they even act.