I am proposing we add an Impobbable Bloontonium Lab (IBL) category. This category would have the runners start at Rank 1, make their way up the ranks to unlock Bloontonium Lab, and beat it on impoppable. This is similar in flavor as other speedruns where you start from the beginning and beat the hardest thing on the hardest level. Admittedly, the lab may not be the most difficult, but it is the last level. Having the runner start at Rank 1 also eliminates the advantage you would otherwise have inherent in having a higher rank in the single level runs.

Here is my first real attempt, as a proof of concept: