I just had 120 purple mats and blew through them to ability Teebo to the max. Down to 44 now, about to 4 star RG tomorrow just need 1 more shard. I have him gear 7 almost gear 8 but all lvl 3 abilities. Not sure if I'll waste purple on him until he is 5* and meta change/update since all that matters is speed at this point.
I had almost 6 million credits but again wasted the non Teebo and 7* Han so down to 2.8.
I have over 18k training droids...10k 2 star, 7k 1 star and rest 3 and 4 star so I'm set there.
I'll probably be saving everything from here until update other than energy and crystals. However if I get over 150 purple mats and 10-15 million credits saved and update still isn't here I'll properly use that as my base and start lvl and ability other toons.
At this point I have 11 lvl 70 and 9 7* characters.