It is a good suggestion. There are several people though that are opposed to new users having the vote slider right away, because it adds 'cognitive load'. There is a lot of feedback from new users that the platform is extremely complicated. While it is easy to argue that a vote slider is not that complicated, there are people that feel the complexity outweighs the cost. I know you and I are both technically minded, so the thought of something like that adding difficulty is almost foreign, but I do see the point of view from the people that argue it.

If you can get consensus for it and would be willing to submit a PR for it, it would be worth running by Sneak. I suspect you will probably be unable to get consensus for it though, because of the people in the camp opposed to it.