In regards to Ti ELBS... Ti is an incredibly hard, dense metal. The high cost is related, not to the value of the mineral itself, but to the high cost of machining it. It takes specialized equipment.
It works best as a chunk of metal, such as a bolt, a nut, a nail, a beam... I'm having a hard time envisioning Ti wire woven into an ELB. Yes, it would be great, but damn, it would be incredibly expensive to even begin to produce those, IMO.
Glass ELB sounds good, except - where does the air flow start? does this glass ELB have holes in it? If it is, in some way, "woven" with air spaces, or pierced, or somehow other designed with air intake, which won't clog in use, that would be sweet.