I think I'm going to have to vote "no" here.

I agree it's a problem, but this is a band-aid that obfuscates the underlying issue. The problem exists in higher leagues (silver/gold/diamond) as well.

Essentially:

#1. Some Gladiators are OP

#2. Soulbound cards can be ridiculously hard to get

Point #2 is a separate issue and also applies to soulbound reward cards. When you've been playing regularly for a year and still don't have key soulbound reward cards so you know certain match-ups are going to be auto-losses, it is super frustrating. But that should be talked about separately.

As for Point #1, Gladiators were not playtested thoroughly because at the time it was a niche gimmick that was intended for brawl use only. I think at this point the options are:

A. Try to rollback Gladiator use in non-brawls (ban/remove Conscript summoners and the ruleset). I think this would be more challenging because a large part of the soulbound rewards card is the conscript summoners.

B. Errata the problematic gladiators.

At the end of the day, the problem (in novice/bronze/silver/gold/diamond leagues) is NOT Conscription + Gorth or Helmet or Alva or Xulax. The Problem is Conscription + Quora or Captain Katie or Katrelba or Isgald or Fina.

If I had to rank the gladiators:

S Tier:
Quora Towershead

A Tier:
Isgald Vorst
Bertrol Gobson
Katrelba Gobson
Whistling Damon
Captain Katie
Fina Voxum

B Tier:
Chimney Wallstop
Orella Abadon
Marisol Contuma
Flagulon Reine
Jini Guise
Sola Ranjell
Larissa Kerato

C Tier:
Krash Wanderford
Alva the Crusher
Hugo Strongsword
Witch of Warwick
Sarius
Alfredo
Relenor Cleavor
Cutter Brieze
Ajax Lightfoot
Liza Fox
Tatiana Blayde

D Tier:
Helmet Kharafax
Edith Emberstar
Trapp Falloway

F Tier:
Paladon Rakk
Kotriphus Bane
Gorth
Xulax Nightwind

See any common themes? Since Bloodlust is the central feature of gladiators, any abilities that improve the chance of getting bloodlust kills are especially strong such as dual attack types (Quora), opportunity (Fina/Isgald/Bertrol), snipe (Katie/Damon), sneak (Katrelba), and Double Strike (Katrelba).

I think the better solution is to errata the one S Tier gladiator (Quora), the 6 A Tier (Isgald, Bertrol, Katrelba, Damon, Katie, Fina), and possibly some of the top B Tier gladiators. And then potentially think about improving the D and F tier gladiators.