Demongod: try going back to logical reasons for suggestions. You simply use too many emotional ones now, calm down, reanalyze the situation.
First of all, if you really think that games like Starcraft, Warcraft (and i bet Soulcalibur too, tho i dont know this one too much) is the same for you and me as it is for the firsttimers or the pros, then i have a couple of links to prove you wrong. A game is not the content, the rules, the physical form, a game is what you experience. Anyone who knows how the pieces move can play chess, the rules are the same, the pieces are the same, and the game is so vastly different as you progress...
Second, back to the original topic: if you could decide or deny the matchup, it would have a lots of side effects that i dont think you considered: not only would the ranking system become meaningless, we would lose even the weekly gran, thats for sure. Playing matches with yourself is illegal as far as i know, but playing "random" matches with your friends isnt. Who is to say how much weekly gran would it be possible to farm like this? Abusable-->not acceptable. And its nearly sure that the lvlup reward cards would be gone too, making this game really not free to play anymore (even is the MM stays, having only one way to earn gran left is not a solid base to a claim for free games).
Another important thing that most players tend to forget (and since you are new, you didnt have time yet to learn): "top tier" and "meta" decks are not necesserily the strongest, but nearly sure they arent the most efficient at least. They are damn strong, but whats more important: easy to learn, easy to use.
If you are just a little bit smarter than an npc, you know how to summon stardragon on turn 5, and you also know how to summon salamander on turn 6, and hit stardragon with it.
The simple fact is: along with the well known meta decks, there is allways a handful of other files with just as good win rate, but people dont copy them. Either they are hard to use, or they are so specialised that only the inventor is confortable with the style, or they are simply not that flashy. Hell, even i had an original deck with 90% win rate, and on my falkow acc i'm using a modded starter with ~70% win.
Paying players use decks with rare cards because they can, and if they can, why not? But its not like they couldnt play low rarity cards with similar results (while the original lycan rush is now rare, it didnt have more than one playset of 3* card in it, and even that wasnt neccesary).
Dont be so eager to divide the players and try to avoid the class struggle metaphore, because it undermines even your good and creative suggestions too.
Anyway, from the sound of it, i think you would like to play in the training arena more. No cut-throat competitive atmosphere, not just the best available decks, you can pick your opponent, and whats more, you can invite him to play too, not to mention you can arrange the decks so it wont be a mismatch for either of you. There used to be efforts to make the training arena popular for these reasons and even more, and most people actually enjoyed it and helped with promotion and plans. Maybe you should give it a try too.
Something must be wrong with me. I'm giving advices to someone i should kill.