I'd love to see some more variety in maps as well, the current ones are somewhat overused by now.
I'd like more outdoor maps. Bits of the Shadow Shards would look nice for some missions as well.
I need a spaceship interiour for my AE Mission but unfortunately was stuck with a normal Tech Map.
Also a steampunk-esque map, after running some Nemi arcs last night I found it a bit odd that they were either in warehouses or high-tech bases. 
Hmmm, tropical islands...sun, beach, palmtrees, and a special temp power to throw coconuts...
Eh yes please, more maps, always good 
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I'm not good at giving advice, can I interest you in a sarcastic comment?
@Lyrik
Posi stated they will give us more maps during his fifth anniversary Q&A session.
Let's hope you get what you wish for.
Maybe he'll even bring back the elusive Crey Cloning Lab and Burning Forest as a special treat 
Clonig lab and burning forest are still in this game. Generic missionmaps are nonspecial missionmaps from some random contact.
edit. But yeah. We want clonelab and burning forest to AE.
Prunejuice is warriors drink.
I suggested it somewhere already, but what I'd really like to see would be a set of maps, like, say Longbow, but with customizable group logo...
it's maybe a crazy and bad idea......an actual map creator?
That would be fun but then there would be an explosion in farming.. Who think it's worth the risk?
What we have? Storeroom, couple of caves, laboratory, arachnos base and offices. Oh and cargoship. Thats the generic missionmaps. Perhaps its finally time for a few more generic maps.
Actually I needed spaceship interior to my AE mission. Perhaps castle or manor fits this game too. Something like Bruce Waynes manor. It was littlebit disappointment that Countess Crey lives in cave
Outside maps could be tropical island or countryside with farms and fields (not like croatoa ghostmaps).
Prunejuice is warriors drink.