As someone who has jyn at 5* g8 lv 85 i do not think she is worthless in the slightest...
Her tm steal every other round is extremely valuable in gw and i use her to great effect on every node of gw and have been since 1st tourney ended. Once i max her gear it will be very nice to be able to never let EP move! Imagine, no stuns or shocks! And her AOE does decent dmg but more importantly gives 100% tm to an ally of your choice, how is that useless? Of coarse AI will prolly play her horribly but on offense that is what i intend...
I ranked in top 25 on last jyn tourney with the increased refresh rates because i have a good selection of capable teams to spread out the refesh cost.
If they cost is capped at 5k then it will be much tougher to get her i think. As everyone will spam the same team again and again and again.
Whereas the higher refresh cost requires you to know what your doing and use just what you need to win and not overkill.
If you have several teams at g8+ you should be able to through judicious use of your roster make that 500k count and push into the top 100 or higher.
If its capped at 5k then its about who has the most time to invest, AP to back it up, and patience to follow through.
I prepared for both scenarios this time around.
And will see you on the battlefield warrior!