Well I can probably guess what TT unit this guy is aiming to +10 first

Tbh, that looks like a waste of investment. I would of gone with a tanky Wo Dao, SB, Wrath, Atk Smoke with Qr. I also guess it helps that player...

I’m going to +10 Aversa/B!Marth/M!Kana.

We all make mistakes.

But seriously..
There are so many amazing options.

Walhart who can stack up stats like he's an armored unit

Arvis, who can now ploy and double like a boss. A near perfect support unit.

Julius. With his BS tome that allows him to tank Reinhardt.

Black Knight. Who is himself

Linus, who's able to galeforce mash himself through half your team and still have the bulk to survive a physical hit.

And plenty of characters who are very likely to get a refine in the (near) future.

And you pick Tobin.
To- why don't you use Solei or M!Corrin for thse allround build things -bin. (since at least they have the speed to not die to everything)