We should create genetically modified mosquitos that provide vaccines whenever they bite

Good.

one thing that i sadly cant claim to know very well is stuff about ecosystem science and such anything fancier than "the wolves got killed off by people so the deer things ate all the plants and fucked everything up" however i do remember reading a thing talking about how the lose of the little fuckers wouldnt do much damage at all as nothing uses them as their primary food source or even as a secondary food source, they dont serve a ecosystem purpose like decomposing stuff for example and their negative effects with spreading multiple sicknesses to multiple animals including humans being removed from the equation would have a far heavier positive impact than the negative impact of losing them would have.

Actually they are a primary source for some birds

"the first reported death from the super mega plague has came in today and was quickly followed by 100 more within the same 20 minutes..."