The map veto can go 2 directions I think :
Route 1 :
Mibr bans ascent
Sen bans fracture

Mibr picks icebox (Their best map. They are currently the best on the map in the world I think.) (If u guys are thinking why Sen would leave it up, they have looked solid on it with the new comp and I think they would take their chances of anti-stratting this map and playing it rather than ban it)

Sens picks Haven (Sen are the best in the world on this map and u can't convince me otherwise. They have shown multiple different looks on it and look good on every look.) (Mibr leaves it open for the same reasons Sen leaves Icebox open)

Mibr bans Split
Sen bans Lotus

Decider is Pearl. (Both teams look good on it and it will be a banger map 3)

Route 2 :
Mibr bans Fracture
Sen bans Icebox

Mibr picks Lotus (Sen don't look good on this map at all. They struggle to play this map for some reason. Their timings and coordination is off as well)
Sen picks Haven (Best map for them by a long shot and the reason they don't pick Ascent here is cuz they can't start defense)

Mibr bans Ascent
Sen bans Split

Decider is Pearl. (No matter what I think Pearl is gonna be the decider map cuz both teams would like a good map for their teams on the deciding map of the match and thus will shape the veto that way)

I think Route 1 is the best possible route for both teams because through that veto both teams get a map they are the best in the world at. And then pearl as the decider. It also makes more sense in my opinion for Mibr to ban Ascent rather than Fracture because they know that Fracture is Sen's perma ban. So that way they can force the veto in a specific direction as well.