Cartographer's Sextant (need to rework)

Hi guys, Cartographer's Sextant atm looks very weak.

1) 4-5 sextants force player to run same map at least 3 times. (usually for pro sextant farmers it is 1 map 20+ times then if elder dissapears, spawn him and move to a map and repeat)
2) Sextant block still possible.
3) Shaper-Elder orbs allow players to use white cheap sextant on red maps up to t16.

My suggestion here is rework mechanic, remain only 1 type of sextant which applyed to all atlas radius instead of small circle around map, reduce amount of active sextant to 3-4.
I think that mechanic will balance situation between new players and pro sextants abusers, and more players will actually use them instead of sell.

Or remain all 3 types but split mods rarity:
white sextant apply only common rolls like slipstreams, additional lightning mosters etc.
yellow sextants apply mid-rare mods like bodyguards, zana etc.
red sextants apply rare mods like breach, abyss 500% strongbox quantity etc.

So basicly I see it in that way:
aply 3-4 sextants on atlas and run any 3 maps. I belive most of the players will more than happy with that rework.

Best regards guys!