YES YES YES YES YES YES

Only issue is this
Imagine you have all your gear and runes and heroes setup right now for baal.
in 2 weeks your setup will be different GUARANTEED

Now one would say "NO i use the exact same formation for baal every single time"
No you dont! No one does
YOu upgrade teh gear and runes daily.
SO if tyoday you have a level 7 bane on your main for baal
in 2 weeks you might be using a level 8 or 9 bane
Today you may be using a level 20 HB sword on your main
In 2 weeks it may be a level 27 Guardian sword

Unfortunately because the weapon levels and rune levels are changing so frequently, it may be a massive issue for the programmers to be able to define presets for us
Yes they could do formation
but i doubt they would ever attempt rune and gear combo presets