"Kebby isn't done with Block Quake and has a list of ambitious (and hilarious) features they plan to implement in the future:
-Add some blocky themed sound effects for weapons, enemies and objects.
-Create new custom blocky themed HUD and GUI graphics.
Possible mod support for online multiplayer modes like QuakeWorld CTF (maybe!)
-Finish the new gibbed-limbs and blocky blood models for the CustomC source code overhaul version.
-Once CustomC is complete, implement the new source code changes into the ProgsDump version.
-Censor the entire game and remove any mature themed content and replace it with age appropriate material.
-Finish the Blocky WAD textures by adding more brick pattern variety and color options.
-Create some Blocky themed maps in Trenchbroom and maybe have a Block Quake Map Jam! (eventually)"
More info on this page:
https://www.pcgamer.com/block-quake-delivers-the-lego-quake-experience-we-didnt-know-we-needed/