If it was me (and it's not, but if it was
):
I'd leave the "freemium" model in place. As much as I personally dislike the F2P schema,
it does bring in new players better than a full subscription-only plan.
Then I'd have the VIP subscription at $9.99 a month.
I would also have a relatively short window (about 6 months) where all the unlockables
are sold in a couple of bundles [costumes bundle, powers bundle, a bundle that included enough
tokens to go to vet reward tier 8, etc]. These could be used to bring a quick infusion of cash
and to bring all of us mostly back to what we had.
Going forward from that, I'd have the normal sales in the store. I might even add in an Influence pack
and an SG Prestige pack for those folks who simply cannot wait to get their bases back up and running.
I'd also like to see a store purchase able to unlock the "VIP Tier 9" costume sets that they rotated out
of the reward tiers.