1.The quiver should be as light as humanly possible.
2.Ideally,the front of the hood should be even with the front of the riser,not protruding forward much past as this creates a brush catcher.Some riser designs make this difficult.
3.I like the nock of the front arrow to be even with,or behind the bow's lower tip.this keeps the nocks out of the dirt when leaning it against a tree and the fletch ends follow the shape of the bow,making a more streamlined unit.
4.From a front or rear view,the hood should be as tight to the riser as possible without causing vibration issues and the closest fletch should be very close to the lower limb but have clearance.This keeps the quiver and arrows as close to the bow's center mass as possible.
5.It has to be quiet and not prone to have parts vibrate loose.The less metal the better.
6.Ideally,I'd like to see clearance between the arrow fletches but not fanned so wide apart as to make a huge fan at that end.
7.The broadhead dulling does occur.Flexible foam dulls edges quicker than you think.
Every bow is shaped different and it is difficult to achieve all those things without building the attachments to fit that specific bow.I usually modify a quiver or build one for each additional bow.
The EFA is probably as light and quiet as a quiver can be built.
This is one made from parts of other quivers and a hood and brackets that I made.It angles just as I like and the hood doesn't protrude much past the riser.It is very tight to the bow with a slight clearance.It is quiet as long as metal parts are Loc Tited.fairly light weight but 2 or 3 oz lighter would be great.