#2 - I'm not sure I understand your counterpoint. I am suggesting the glyph be removed entirely, therefore it would be 20% haste when you use IV. I'm suggesting the glyph's effect be baseline, not remove Icy Veins.
#3 - Auto-activation is good because you can react to mechanics without losing DPS. It turns it into more of a passive talent and allows PoM to be your proactive choice while Ice Floes becomes your reactive choice. Blazing Speed fulfills the niche of function fights where you need to get from point A to B quicker than a blink. It means you can truly use any of the 3 talents depending on the situation rather than one talent ruling over all.
#5 - Why is frost supposed to be more damage on a frozen target, when our targets do not get frozen? It is time to move on from this PvP consequence. I see it as there are two options: 1) Change frost mastery, or 2) Create PvP-specific tooltips. One of these must happen and the former is the most realistic to change. It does not necessarily need to change to what I suggested-- I am throwing the idea out there is all.
Did you have a comment on #4? What you listed was in response to #5.