The NITs have been in the hands of many smart talanted people for a long while now. If there was some magical script to boost things by 50% it would have been done by now. The only way to get a significant boost is to code an app in Xlib instead of GTK. This is what telescope and the new app launcher are using and that is the hardest way to make GUI apps.
If want microB to run as fast as possible then go to tools>settings and untick "enable javascript". That will get rid of flash and google ads which are the number one slowdown and no script in the world will boost your javascript, your flash and the pulling of content from other websites.

tuliobaars@
It nice of you to want to give to the community but we are very spoiled here and used to good stable apps. If your app is not 99% done and carefully tested, then I suggest you ask for people to be testers and not just install somthing they don't know how to deal with if it goes wrong.