As someone who has done this - my blades were at 7/16 and my tech ground them down to 1". He ground off the drag pick. The glide was amazing. Stopping was impossible.
I would say, since this hasn't been addressed, that you generally don't have a blade for Figures and Dance. It's one or the other. Dance likes deeper hollows. Pretty much anyone who does primarily dance at my rink is on 3/8.
Wow - completely removing the drag pick! That's hard corp - what some school figures skaters did, to give them longer glide, but not usually what ice dancers did.
For MK Dance blades usually use a smaller ROH, because it is ground thinner than most blades at the bottom (the working region). That is to get the same included edge angle. But that doesn't apply to Coronation Ace.
If you decide to make changes, perhaps you should start by making modest changes, and see how you like the result. I.E., not completely removing the drag pick. I've occasionally trimmed my drag pick
a little. But destroying it completely is a lot of change - and it isn't reversible. If you want to economize. You don't really need a skate tech to make such changes - you could use a simple flat grinding stone to remove a little at a time. I wouldn't suggest too coarse a stone - you still want the toepick to be fairly sharp.
OTOH, by the time you need to remove a significant fraction of your pick, AND your profile has changed, you shouldn't expect your blade to have much useful life left. It's a hugely different blade.
But it's your choice.