I certainly have. I’ve got an 8/8/8 Leonidas and 10/10/10 George. In fact, I’ve used the latter substantially in harder content, because buying up to 3 free turns of enemy fire so your CDs can refresh, or your DPS can eat an ST NP, or w/e, are super-important. Leonidas himself is a super good indirect crit enabler and meat shield in my experience so far, if fighting enemies who charge gauge easily (a la Gorgon). Buster amp, Guts + taunt to buy at least a turn, then on-NP buying 3 more turns’ worth of survival at max alongside 5-25 stars and 30+% DEF (I’ve even used him as part of an NP chain to eat enemy attacks before following it up with Hans-boosted crits for, say, Proto Cu or Spartacus or Lu Bu). In this thread I talk about using George for protracted battles.
Here’s a grail-less and Maid in Halloween-less Leonidas solo by KyTheGamer
Multiple taunters used to stall out Nastya in LB.
And what I feel is a very good example showing of what I meant with regards to Leonidas as a crit enabler, by Cometdance.
Meanwhile, you have Ort/VR Mash, who I feel is frankly pretty fantastic. Her kit having 2 native sources of taunt, one with an invul? Amazing. That is at least one non-invul-piercing NP turn you can eat, or use to filter her out to bring in Shakespeare/Mozart/Bride/Chiron/any other taunters and, again, continually keep your DPS safe. I remember seeing something like that against Napo but I’m too lazy to find it again, sorry.
Ofc I also keep around L1 Leo and George because solo strats are some of my favorites ever, and incredibly consistent. But hopefully those links and junk help.