So, on todays dev/pixel art stream I decided to take it slow and instead of pushing new tiles without a clear sense of where I'm going, I decided to do some studying! Using the good feedback I've been receiving here and elsewhere (thanks Yuroran on Twitter,
https://twitter.com/yuroran/) I put some work into revisiting one of the characters, ALAN.
ALAN is an android and the first version was based on the same scale/template than the player sprite, and also it looks quite stiff. So I revisited the art for him using the 2nd iteration on his concept sketch. Here's the pixel art and below the sketches (left old, right 2nd iteration)

What I like is that I've broken the template so this opens more variety for characters. Mind you this sprite is not 100% pixel art, it's just a quick study, it needs tons of refining still but its me exploring different dimensions for each character, they don't have to be constrained to 32 px x 48 px.

Also made some experiments with a new grass tile, now studying some refs, including Sword of Mana as suggested by eishiya. I think SoM has beautiful pixel art and might use it as an inspiration.
I will continue doing more studies, cliffs too to put the great feedback by Chris2balls to good use.
Stay tuned, and keep the suggestions coming, much much appreciated!
Ribs out!
EDIT: The VOD of the stream is here if you want to take a look or listen to my dev talk/thought process:
https://www.twitch.tv/videos/463874271