I can't speak to fly/transmute, so I'll let someone codey do that.

Druids do have a lot of really good gear options still though, including newer things (added within the last year or so).

As to invokers, I can tell you that if that were the case, I'd personally want their ceiling power toned down considerably. Invokers get to have an assortment of pretty insanely powerful stuff at the cost of being a nerd (I think that's a funny way to phrase it). So I'm against that in general since that would require a jump back to balancing, toning things down, etc. There are other classes that are casty/communy that don't require that level of investment and who have lower ceilings.

Explore/PvE scene - we'll see! We continuously have areas in the works, but the process tends to be slow and steady. Either way, there were some recent area additions, so jump in and maybe they can sate you until something else pops out :).

-Ish