I’m currently working on list of requirements and tech specs for the GPU. Unfortunately I did not find any documents which describe the GC800’s specs completely (e.g. power consumption, area estimation and so on). Would you mind help me find a proper document including complete info? Otherwise is it possible for you to describe the GPU specs completely?

Deadline = ?
The GPU must be matched by the Gallium3D driver
RTL must be sufficient to run on an FPGA.
Software must be licensed under LGPLv2+ or BSD/MIT.
Hardware (RTL) must be licensed under BSD or MIT with no “NON-COMMERCIAL CLAUSES”.
Any proposals will be competing against Vivante GC800 (using Etnaviv driver).
The GPU is integrated (like Mali400). So all that the GPU needs to do is write to an area of memory (framebuffer or area of the framebuffer). the SoC - which in this case has a RISC-V core and has peripherals such as the LCD controller - will take care of the rest.
In this arcitecture, the GPU, the CPU and the peripherals are all on the same AXI4 shared memory bus. They all have access to the same shared DDR3/DDR4 RAM. So as a result the GPU will use AXI4 to write directly to the framebuffer and the rest will be handle by SoC.
The job must be done by a team that shows sufficient expertise to reduce the risk. (Do you mean a team with good CVs? What about if the team shows you an acceptable FPGA prototype? I’m talking about a team of students which do not have big industrial CVs but they know how to handle this job (just like RocketChip or MIAOW or etc…).