As far as it goes .... an aluminum frame with a sturdy carbon fork which could accept 650b and 700c is a great idea ... I think there are probably companies building them already. Some forks have adjustable dropouts so that the bike's geometry stays the same with 700c and 650B wheels which i would find essential.

As for brakes, I see no reason to use V-brakes ... if I didn't want hydro discs I would just use mechanical discs. I mean, if the fork is already designed for discs there wouldn't be a lot of gain by using V-brakes that I can see, and cable discs work well in all environments and are a simple as V-brakes.

My question might be ... what would this frame be designed to do? Arte we talking road-bike geometry, gravel bike geometry? There is a bunch of great gravel within a hundred miles of me but I am not going to drive two hours to ride my bike often. It might make a great tourer or bikepacking bike, but I am covered on those fronts already. As for road riding,unless I was going to do urban commuting again, all that tire width would be wasted.

If you are planning to mimic the frame shown but in aluminum with a CF fork .... yeah, I actually really like the frame but have no use for another steel bike. My questions would be, how much will the frame weigh and who will design it? You cannot just swap in Al tubes for steel, and as far as I know Al might need heat-treating .... so does whoever is building this frame for you have a giant oven?

If you are giving away the frame for testing .... I unfortunately cannot afford to build another bike right now---or I can but choose not to, because I have built or bought enough bikes to meet my needs. If however, you are looking to hire people to build and test the bike, message me and we will work out the parts and labor and wages, and I will get right on it if we can reach a deal.