This will be off topic as usual, but here's the way i currently see it (it might be right or wrong) ....
Several things can be achieved without the need of Deciphers approval ....
1) Marketing the game, this site and GCCG to increase the players base and users on this site - anyone and everyone can do this and if they like the game enough are probably already doing this.
2) Building up local player groups and running tournaments.
3) Rules support releasing an up-to-date CRD (containing clarification of cards) as discussed in TLHH.
4) A new website that promotes the game, contains articles written by players, contains current rulings (or clarfications), download links to support material, tournament ranking system, find-a-tournament and find-a-player locators, etc.
Anything that changes the game and impacts on Deciphers ownership of the game is asking for trouble without Deciphers approval. This is where Deciphers approval will be needed. And this is where leadership, organisation will be paramount.
1) v-cards, errata-cards, promo cards, etc - can only be issued with Deciphers approval. Some existing players aren't interested - so a compromise has to be reached (pre and post Decipher format seems possible?).
2) Rulings on cards that involve errata and changing the meta of the current game if broken or over-powered combinations of cards are
discovered that impact the playability of the game (it happens when lots of players play a card game).
Until the non-PC part is established I can't see any point in moving to the second part because the community is too small to support it. Once established, it is then time to find a leader, and someone passionate enough about the game (or someone who wants to expand their resume) and approach Decipher. As c1G.com has mentioned - a charter will be needed to get Deciphers approval. We will need to outline our initial goals and vision of what we want to do with the game. We won't be able to do anything that is not approved by Decipher.
There is a valid argument that establishing the second part will support the first part. So perhaps it is possible to obtain Deciphers approval and provide some structure and formal support for the game first. If it is ... we still come back to the same problem .... we need a leader and someone passionate enough about this game that they are willing to jump in and give this a genuine go (remembering that it is a volunteer position, will take up alot of time, and probably minimise the amount of time you have left to actually play the game). The only benefit is perhaps to practice running a not-for-profit organisation.