Digger of Bricks

Most indeed! Very much a Decopunk/Dieselpunk/Steampunk sort of color... Well, before he was unveiled, I was sorta hoping Dangervest would be more like that kinda Golden Age, Pulp Adventurer type in his get-up.

And, besides metallic/pearlescent colors, I think Earth Blue or Dark Red Classic Spacemen could be quite exquisite.

As far as metallic/pearlescent colors go, I think a Copper Metallic Classic Spaceman would be extraordinary...

I loved TLBM, and I didn't necessarily think it was at all a bad movie; but, given that it was more of a Batman Movie rather than a Lego Movie, 2014's The Lego Movie is definitely superior to TLBM in those regards.

For both figure and accessory, it'd have to be Dorothy Gale and Toto; but, if I were to exclude the Wizard of Oz characters from this poll, my favorite CMF would be a tie between Vest Friend Rex and Apocalypseburg Abe, while the best accessory would definitely be Gone Golfin' President Business' golf club.

Another drop-dead gorgeous addition to your Art Nouveau streetscape @Giacinto Consiglio! I absolutely adore the pairing of Spring Green and Sand Green for the left-hand building, and the spiral staircase within the clocktower is most extraordinary!

Well, if you are speaking in the context of modern locomotives/trains, that's kinda besides the point of this conversation, as many of us here are pondering the feasibility of sets based upon locomotives of the past. Modern trains are pretty much a given from the City theme every four years, whereas everything predating such are much less certain.

Hey, check out one of Bricklink's AFOL Designer Program finalists! - Bricklink - Skyline Express by jazlecraz P.S. Here's the EB topic for Bricklink's AFOL Designer Program for those unaware:

SWOOOOOSHY!!! I mean, dang, the tri-colored striping going along the length of this fighter really puts it into motion!

New Elementary - LEGO® MOVIE 2 REVIEW: 70830 SWEET MAYHEM’S SYSTAR STARSHIP!

Average verses Extreme? By that are you referring to types of locomotives, or quality of set build? Eh, I still think a Three-In-One locomotive with cars/coaches as its alternate builds is a much more viable option with customers outside of the fanbase.

Sure, but the thing is, I personally would rather see something original from the next eventual Space theme as opposed to a straight-up revival of Classic Space right away, preferably keeping those outright throwbacks to Benny & Company reserved for the Creator Expert theme, Creator Three-In-One sets, promotionals, cinematic Lego Movie tie-ins, and what not for the mean time.

I'd love to see @just2good and @Ashnflash give their own predictions and artwork for Series 19, to whom that video's creator give credit to for inspiration!

Here's a custom CMF draft which I missed back from October that's the work of two YouTubers giving their predictions for Series 19:

Nice! I must say though, the lack of angular "Nexo" parts in this one makes it look a little less characteristic with the theme compared to the others; but, I guess that's just consequently due to all the circular parts used instead to emphasize the "lance" look of the destroyer-craft.

Well, pretty much everything Creator's Three-In-One line puts out is generic; but, as for a particularly recognizable "mid-sized" locomotive such a set should aspire after, can you really go wrong using this guy as your inspiration?

Here's the rest of @Ashnflash's artwork done for @just2good's video covering Dimensions' purportedly canceled wave: