I prefer the idea of having it rotate out each day of the week just like the normal roadmaps.
Radios: put the radio roadmaps on a daily rotate out, just like normal daily maps. Make gold radios a thing.
Day 1 is uncommon+low-rare gear, as it is now, and gold radios give low-legendary gear.
Day 2 is silver ascendance medals + legendary ascendance medals, and gold radios give larger pools of both.
Day 3 is 4 star tokens + prestige tokens, with gold radios giving 5 star tokens.
day 4 is basic tokens + elite item tokens, with gold radios giving 4 star weapon tokens.
Day 5 is 2 star trainers + 3 star trainers, with gold radios giving 4 star trainers and a benedict at the end.
Day 6 is gear markers + supply markers, with the gold radios giving a combo of faction assault markers and survival road markers.
Day 7 is 3 star weapon parts + 4 star weapon parts, with golden radios giving critical components of both those rarities.
Day 8 is persona trainers with Lilith at the end + trait ability trainers with Ulysses at the end, with gold radios giving Adens.
Day 9 is scavenger camp supply bags, with gold radios giving the best supply bags.
Day 10 is territory stimpax of varying value, with gold radios giving territory cans
Day 11 is drug kits of varying value, with gold radios giving survival road tourney cans
Be willing to add new radio roadmaps to the rotation as new currencies are introduced or as the community requests. Reduce the gas per stage of all the radio stages to 5 for bronze, 7 for silver, and 9 for gold. Monetize this by making gold radios premium and/or high up tournament rewards. You may even consider adding 1 gold radio per week to the monthly premium pass in order to encourage its purchase, though I warn that this might be seen as a “pay to play” model by many, so if you take this route, I would encourage you to also create free ways to obtain the gold radios. As long as the rewards are balanced, scopely could value the gold radios at 1,000 coins.