Nah. Just think it through.
This already failed before, there where already proposals on Kickstarter IIRC.
Furthermore we got the subscription from BF directly.
One of the biggest problems is, especially when it comes to specialized features, that the amount of people who actually are interested in it is small, and on top of that, let’s face it, the broad majority of Blender users are hobby users or just don’t bother to spend money. They talk how great Blender is and how much they would contribute, and once a project is launched requiring the user base to chip in with money the loudest noise is the tumbleweed rolling through the dust… 
Another problem or better, risk, is, that it will not make it in trunk, or that the “contribution spirit” isn’t there:
I was one of the backers of Ocean Sim for instance. I didn’t actually need it at that point, haven’t used it in any of my projects thus far, but maybe one of my clients will require it for a future project, or some other user already used it successfully in a commercial project.
Great. Next time a feature is added by the community with financial effort, I just rely on the “contribution spirit” of the others to get an actual useful feature in Blender, I might have a use for. For such an project every contributer counts.
Still the successful funding was no guarantee that Ocean Sim would ever make it into Blender, it might have been a branch forever.
And at one point you might have ended up with using Blender 5.81 and having to somehow make all work with Blender 2.55 as last branched version to properly work with Ocean Sim. (random version numbers)
So, it would be up to the BF to launch such a funding, which they already do.
You can subscribe or donate to the BF at any time, and Ton lists on a regular basis what projects have been approved and how many funds are diverted to realize it.
If you don’t like the direction Ton steers the ship, you can always fork Blender and start to raise funds for the projects you think are the right to implement in Blender…
But, for how long will you be able to maintain it, and offer updates and a compatibility to the trunk?
To bring this back on topic, OpenShot is a video editor… You pay for what it is and it’s clearly outlined what you pay for, what you’ll get and it’s in the hand of Jonathan Thomas.
Blender is too much already, too many features to improve, too many proposals to add.
Personally I think it’s best to donate to the BF and let them decide what’s best for Blender.
And if you don’t approve with Ton or whatever, don’t donate - don’t complain, and fork 
That said, the last 2 days it made ~2k USD per day, a good tendency.
I will tell you how it is as soon as I get the first beta version 