Is the following true? For every $\varepsilon>0$ there is a finite subset $W$ of $\mathbb{N}\times \mathbb{N}\times \mathbb{N}$, such that $$|p_1(W)\cap p_2(W)\cap \{p_1(x)+p_2(x):x\in W\}\cap \{p_2(x)+p_3(x):x\in W\}\cap \{p_1(x)+p_2(x)+p_3(x):x\in W\}|\geq (1-\varepsilon)|W|.$$
Here $p_i$ is the projection on the $i$-th coordinate of $W$, and $0\notin\mathbb{N}$.