I don't always get mount drops but when i do...

Used up all my luck for this year on the first day :(

tlpd spawns 2 times a day now... well has the chance to since it shares spawn with vyragosa. the drop rates of mounts are unchanged as far as i know, as for the posts its christmas holidays for most people so almost everyone has more time to spend farming for mounts/other stuf. I'm pretty sure it has to do with the removal of the requirement to be in a raid group to enter the raids anymore. So much easier to not have to worry about bugging people to form raids with you so you can zone in and kill the bosses that it makes it easy to just farm them on all of your alts.

More kills each week = more mounts will eventually be dropping.