can we just get a vote from all the iota holders to allocate 5% of their holding to the foundation in the genesis?

there are several advantages to this.
1) it will take into account the opinion of the majority of active stakeholders, which is good enough.
2) if we truly care about the tech and the direction of the project then the future should *only* lie on the hands of those who really care.
3) it will happen at the genesis distribution, so it is much easier than collecting all the pledges.

Also, "calling for donation" is a lengthy and ineffective process because the message and the gravity of the matter may not reach all the targeted audience. while the announcement of a vote and and the voting process will be more effective and more accurately gauging the interest of the active stakeholders.

If we cannot reach the target fund required, we cannot say that the "community" is not interested. because clearly the "Active community" is interested while only the "idle and speculator part" remains inactive and could be counted out. Just like if you do not cast your vote at the election, you lose your say on who will be leading the country (you are even penalised in where i come from).

Apparently, decision on the foundation is an easy one, those remain inactive will do so no matter what we do, so just find a way around them. They will have a few choices, vote no and see their hoard going down the drain OR remain silent and let the majority cast their opinions OR say yes and we move on with a favourable decision.

TLDR; I say we just have a vote using the btc address and nxt address used at the crowdsale. one address for yes and one address for no, anyone interested and eligible should send their corresponding votes,by sending a set amount of btc or nxt (a few cents in fiat term), and we can aggregate the result.