Maybe add an option for the poll: "Opponent deck code at the end of a PvP battle". It'd be pretty nice for restricted PvP, although not essential.
Some people don't like revealing their decks, and particularly during pvp events this makes sense. However, an option where you could click a box somewhere to allow/disallow your deck to be shown to opponent after the duel would be appropriate.
I have a few suggestions for what Elements needs right now, based on more recent experiences I've had.
1-Better random pvp. Right now, pvp1/2 only has new players, so veterans don't want to play there, and events/tourneys are pretty rare. Increasing the electrum reward probably encouraged some more play, but even then, you're probably increasing mostly the number of new players, as the veterans don't care about electrum as much. Unfortunately, tourneys have their own problems, leading to point 2...
2-Increased quantity and diversity of pvp events/tourneys with prizes. Tourneys are currently twice weekly, and events are even rarer, and usually don't have prizes. To increase interest in these, more of them could be available, and more sanctioned events with prizes could be set up. Even the top level players aren't able to even come close to an ultra-rare playset of cards, even if they win every single tourney and event offered right now.
3-More cards. Just more. MOAR. The metagame, particularly in tournaments, is really small, and ends up being essentially a 50/50 toss of the dice at top level play, due to the lack of diversity in the card pool and metagame. When I play in tournaments, what usually happens is that the weaker players generally lose right away, and then the top few players end up winning/losing due to luck, because the metagame isn't diverse enough to differentiate between skill level at that point.
4-Arena. There should be some sort of motivation besides a puny amount of electrum to build a successful arena deck. Right now, I just build silly stuff every time and laugh when it does well or does poorly. I also think that at least in platinum, 500 players is probably too much, because I don't think we even have many more than that, as it is impossible to actually drop below 500th place in the arena with any deck even slightly better than a farm. Conversely, in gold (and maybe bronze/silver, but I don't play those so I don't know) there needs to be more places, because one win/loss in gold is huge in the standings, and people drop out or make top 100 after like 3-4 games.
More to come later, maybe.