The level 50 cap will be lifted soon. The new level cap will be level 99 and there will be two new difficulty levels: nightmare and hell. I will also have to work on adding new uniques for nightmare+hell difficulties, but I may just add those a bit later.

any plans to add Kunark / Velious / Luclin / Planes of Power zones?

Very doubtful, but you never know.

kunark at the very least would be pretty epic imo. three different roaming world dragons (Severilous, Talendor, Gorenaire), two dungeons with raid mobs at the end (Sebilis had Trakanon and Karnor's Castle had Venril Sathir), and then an entire zone dedicated to raid dragons (Veeshan's Peak).

and kunark introduced the Epic Weapon quests, which spanned multiple zones over every continent

would be a whole lot of art assets to build though, which i imagine at this point is the main roadblock to adding new content.

i don't know how to code, but i'm decent with image manipulation and i'm sure a few of the rest of us are too... if you needed help in that area i bet you could find it.

Maybe, but doubtful. I think it'd be better to make what I have better. Improve the images. work on the spell effects perhaps. Make the accounts work. etc