This will not work because there is no real incentive to join other than altruism. People would rather just hold their BTSX. If we want to do any serious amount of funds, we need inflation. It's the only way. If we don't do it, we will lose to competitors that are willing to do what it takes to annex the global monetary system.
There is an incentive, and its not altruism.
It is not equivalent to hold your BTSX, nor to simply short bitUSD yourself. Neither of these give any resource to a proposed marketing effort. The incentive is to see the effort actually take place and have capitol behind it. Without which no one can expect to see a rise in BTSX value resultant to said effort.
I for one am wholly against any dilution/inflation. I believe all the capitol we need to produce any sort of marketing plan is already available and stealing value from current BTSX holders, no matter how well intentioned/thought out/un-failable you might think any plan may be, is inherently the wrong thing to do.
What needs to happen, is something similar to OP's proposal. Ideally where those interested and capable of putting up the funds can be rewarded in someway proportional to its success/effectiveness. Even if such an ideal cannot be reached, I would much sooner donate funds for such an effort before I supported stealing from an unwilling neighbor.
There are many ways to secure capitol investment, if we cannot obtain it for this effort it should not be done.