Hey, the built in options are great, any chance to get the ability to set your own goals?

For example, they're not real speedruns but I'd love to set up a speedrun to blue science or a speedrun to MK1 factory in factorissimo.

Creating custom goals is likely to much work for me, at the moment, but I do see the appeal and it is possible.
"to blue science" is a bit ambiguous. Do you mean Research, Produce, or Utilize. The option "Robot rush" covers utilize blue science quite well in my opinion, as it necessitate a decent production of Chemical science packs.

Well it was just an example but I was thinking the first blue science pack produced since that's what is tracked with a timer in the game anyways.

And yeah I agree robot rush is a pretty good alternative if it's not feasible to add custom ones.