You can observe a similar phenomenon, if you are playing in a VtES league or play certain decks quite often (or over a prolonged time). Usually after the second or third time you play that deck, the other players will recognize it (by vampires played and/or distinctive library cards) and say things like, "it's this and that deck", and stuff as "it has no intercept", "it can fight very well, but cannot bleed significantly", etc. etc.
You can take advantage of these (sometimes) premature opinions, when you counter their expectations and have one or two variations of a deck at hand. This is similar to the module concept I have discussed a short while ago, but this time we make variations of the same deck by including a set of cards (instead of switching the same card module between different decks). As an example, I will show you two decklists for basically the same deck and the cards exchanged between the two decks.
What I did for that Ahrimanes deck was exchanging only the combat module, 8-10 cards in total (out of a 80 card deck).
- The first variation is the more bleedish version, trying to add a bit more bleed punch using Unholy Penance. It has 4x Majesty and 4x Unholy Penance. as its "combat" module.
- The second variation is a bit more combat orientated, and has 8x Aid from Bats and 2x Carrion Crows instead.
The concept also works for slight changes, for example switch the two Direct Interventions in your deck to two Sudden Reversals next time. Again, the main purpose is to take away that sense of security the other players might and catch them off-balance. In the same spirit as for the modularity concept, you have to be careful not to change (or weaken) the main purpose of the deck.
On the other hand, a large scale variation doesn't work for all decktypes or clans. The Ahrimanes in the example are very useful for the concept of deck variations, since they have somewhat flexible disciplines (Spiritus in particular) and you can build a variety of different decks types based on this clan, from rush combat using Nose of the Hound & Animalism combat to stealth bleed using Presence and Spiritus.