Equitable Remedy
First Post
For now, let's set aside the question of whether a bladesinger should be taking on a tanking roll and think about how best to do it. It's an unorthodox group 
The parameters are: a campaign starting at level 1 but likely to go into the upper levels, pure bladesinger wizard, point-buy with feats. The question is how to optimize a bladesinger to survive on the front line as at least a quasi-tank?
I'm less concerned about how to play the character and more concerned about how to build him. A mix of good AC, SCAG cantrips, a rapier, defensive spells (the usual suspects like shield, absorb elements, mage armor, etc.) and control spells should be fun to play (assuming that I don't get one-shotted by an ogre or something) and potentially effective on the front line.
There are a lot of thoughts and questions here, so I appreciate you sticking with me! I also want to thank all of you in advance for your thoughts and advice!

The parameters are: a campaign starting at level 1 but likely to go into the upper levels, pure bladesinger wizard, point-buy with feats. The question is how to optimize a bladesinger to survive on the front line as at least a quasi-tank?
- Stat array: 10 16 14 16 10 8 (after High Elf bonuses)?
- I know that the orthodoxy is to take an 8 in strength, but who wants to be a -1 strength mod weenie?
- Assuming I do take strength down to 8, what should I raise? Dexterity or constitution to 17 or 15 respectively doesn't get me anything unless I take resilient (dex/con) at some point. (More on that below.) Wisdom 12 adds a point to wisdom skills/saves, which isn't nothing.
- In terms of what feat to take, would Resilient (Constitution) make the most sense?
- This bladesinger is going to be mixing it up on the front line, and his AC isn't always going to save him.
- Are constitution saves or dexterity saves more important for a front liner in 5e?
- What about the war caster feat? A full wizard making spell opportunity attacks is quite a deterrent from trying to walk away from him.
- With 4 ASIs going to max dexterity and intelligence, he's only going to get one feat
- Lastly, when should I take that one feat? Is it most important to max intelligence and dexterity before taking any feats?
- If resilient (constitution) is the feat choice, should he take it at 4 to get constitution save proficiency (plus that extra 1 HP per level) as early as possible?
I'm less concerned about how to play the character and more concerned about how to build him. A mix of good AC, SCAG cantrips, a rapier, defensive spells (the usual suspects like shield, absorb elements, mage armor, etc.) and control spells should be fun to play (assuming that I don't get one-shotted by an ogre or something) and potentially effective on the front line.
There are a lot of thoughts and questions here, so I appreciate you sticking with me! I also want to thank all of you in advance for your thoughts and advice!