If you want the players to have more variety with their devices to travel why not overall buff the other transporting gear. This worked out well with the universal vacuum.
I don't understand why if something is 'usefull' then lets nerf it mentality. Might as well nerf Nekros since beside him you don't have much variety in survival missions if you want to solo.
I think Itzal is fine as it is. Travelling trough large areas is what made this archwing shine more so in bigger maps. if you remove this functionality it will make travelling trough big maps like the open worlds sluggish and slow.