And there's one other thing I feel is a huge problem:
I think there's a Sirlin-definition "scrub" mentality on the testing team. That is, they believe in a game that both sides "get to play". Yet, IMO, in a healthy strategy game, combos shouldn't just be guaranteed. In fact, I think a strong TCG/CCG environment depends on strong elements of control, since the adage goes "there are no wrong threats,there are only wrong answers", so the answers need to be better than the threats.
Right now, we've seen a steady nerfing of all removal SSs, one sphere's units (Falkow) get hamstrung because it has access to efficient removal, and now even talk (from Romdeau) about possibly changing up Bulerigid SS because despite it being non-viable as a SS with every single file
except one that plays around the disadvantage of returning your opponent's units from the cemetery by keeping them confined to the file, welp, it
has to get changed, because return-type files just have "no counterplay", which is actually more a case of "it beats tribal, so that can't happen".
See, back when I played M:tG, you had all sorts of viable strategies, not all of which depended upon rushing down your opponent with a gazillion creatures:
A) Milling them (Ravnica's Dimir guild liked this)
B) controlling them (counter/bounce/kill into the abyss, EG Psychatog, Mind Sculptor Jace, why the hell did they ban him

)
C) Burning bridge (ensnaring bridge to keep out any attackers, then just constantly play direct damage spells to the face)
D) Stall until you rip some huge spell (EG Mirari's wake strategies)
In Alteil, file destruction, let's admit it--sucks. Even with Chaos Absorption, it's still just not a very good strategy.
Control gets whined about to high heaven, as I've clearly explained.
Alteil has absolutely no counterpart to simply attacking your opponent's LP directly (well it does, but those units are few and far between, and it's not like an iczer can just pack a bunch of grims that say "your opponent gets LP -X" and play them end on end.
As for stalling, the only way to stall is with a tank, as opposed to some sort of other permanent (EG artifact/enchantment/whatever).
I mean I can't help but feel as though the testing team wants this game to be a bashfest, and anybody that wins in some other fashion besides "beat up your opponent's units" needs to have their strategy nerfed.