Brash Assault seal means... Hardy Bearing? Or not?

Out of the 3 new seals from this Tempest, Brash Assault is clearly being the most talked about, as it helps many of the previously underused slow but powerful heroes out on arena offense. What I'd like to talk about however is potential counterplay in case people put the seal on their defense teams.

Now, it's still too early to see how effective, and therefore popular, Brash Assault can be on defense. Many of those slower units like Alfonse, Seliph, Lilina, etc. could still be likely ORKO'd from full health and render the seal moot, but I could see Wary Fighter armors and some Fury + Desperation users that run too amok being troublesome to deal with, especially if Reciprocal Aid or Infantry Pulse accelerated Miracle is thrown in the mix. Keep in mind that, depending on your usual arena score range, you could have a mix of the people who fire and forget their offensive teams on defense AND people who specifically craft their defensive teams.

So if things get too hectic then that's where Hardy Bearing's attack order restoration effect comes in. It previously had more use as an offensive counterplay to Vantage, but now there may be more incentive as a defensive counter play to the Desperation + Brash Assault bandwagon. What still needs to be figured out is 1) who makes the best use of Hardy Bearing and 2) what level of forging is necessary?

My gut feeling says Hardy Bearing could be useful on tanks, especially those with Steady Breath that don't need their seal slot for anything else, and because of that only forging up to level 2 (50% HP threshold) may be all needed if at all. Since a lot of the discussed units like Alfonse, Lyn, Chrom, etc. are red, Lukas might be a great option for HB. But with how early and tentative this all is, likely the smartest action is to just wait but keep 50 coins in reserve just in case.

What are your thoughts? Who do you plan to use the BA seal for? Would you use it on arena defense? Looking forward to any more insight!