Better everything

id like to have some thing for example:

splitters that have one input and 3 outputs (the same with mergers) because there is currently only one usable splitter wich is also priority based for example: i have 60 iron ore a minute and it just puts 45 iron per minute into the upper smelter instead of splitting it 50/50 and everybody knows that a normal non overclocked smelter can only handle 30 iron ore a minute

and id like to have a feature where it displays the efficiency of each machine and a feature where you can say: i want to have 120 iron plates/min and it generates you the perfect 100% efficiency factory to create those 120 iron plates per mintue (also for more complex parts plz)