@Coda.9185. We do have on this forum at least two sticky threads that are open to comment in this forum section. The first thread is a kept up to date by a member of this community that updates with the latest news on what items that are going to be Gem Store (and which items that have limited time left).
Character slots, when needed. Copper-fed salvage-o-matic / infinite gathering tools. These are not must-haves, they are useful convenience items, though. So YMMV. Probably best to decide once you have played a bit more. A permanent lounge pass - preferably one which allows you to return to the place you came from.
Analogy with real life is to enter a big store and see empty shelves with 2-3 items rotating in one corner of those. It's not like we have limited space in the showroom :) Doesn't really encourages Gem purchasing - if I'm entering 3 times such a store and not finding what I want, chances are I will ignore it later, when the object of interest
.