I think i read somewhere that the buses might get implemented in a more intelligent way.
(I can't find it at the moment. So maybe i'm wrong about that.)
But to answer your question:
- Wishes for features need to be posted on the bugtracker with 'wishlist' as tag
- Pure wishes, without support by a Dev or a patch ready to go into the KiCAD code have a very small chance of ever being implemented.
- Document your wish as good as possible. The better it is documented the better the changes a develober will look at it.
The side to report bugs/wishes can be found under:
(In case you want to post there, search for 15 minutes if anyone else has already posted a similar wish. If so: mark it with "this bug affects me too" instead of creating a duplicate bug.)
Here also the link to the official "how to" page for reporting "bugs": http://kicad-pcb.org/help/report-a-bug/