1 and 2 While I am not a fan of cash shops recent models that have taken form over the past few years are worth looking into for SBS.
Primarily skin based ones, akin to League of Legends and Warframe, have had monumental success. They only add to the customization experience. There is no harm to progression unless there are stats tied to the skins (there shouldn't be).
I cannot stress how much I'd love to see special armor packs for each of the tribes. That could be built upon with the blue print system. No stat change, just different materials for a different look. No harm or foul there.
Made note to poke/annoy Caspian for a workshop after the game has release for some player made skins by the community. It would be amazing for this game!
Haven't brought it up yet but I will.
Now exp boosts for skills would just ruin COEs economy out right. I hope those never exist to begin with. My two cents.
3 Do bad thing and get caught? Jail time, loss of play time? Seems to be a big enough deterrent. We can go back to question one and two for ways too speed up the funding cycle. If your characters life is shortened then you will have to buy a new one sooner.
4 We honestly can't really fathom this yet as we do not currently know the specifics, but we can look at all the slated profession to get a rough estimate. Plus there is pvp, exploration and dungeoneering?
5 I cant answer this faithfully. Hope we get a dev journal on the subject at some point.
6 Third party voice communication... You have no chance in winng the meta gamming war. Its going to happen regardless.
Sorry for grammatical errors my phone hates me. May fix later...
PS. This is my 100th post. Yay!