I had 125k endo, and that credit booster finally let me spend about 100k of it getting a few things to R9/10 and a bunch of others to R8. Ended up farming about 22M credits before it ran out. Inaros really isn't bad for medium risk Index, and from what I can tell only the most optimized groups can do high risk fast enough to make it worthwhile. With 5610 hp, 600ish armor, and viral/rad Tigris Prime I can carry 15-20 points without much danger which means you win in 3 caps (best ~4 minutes, avg about 6 min, so it works out to 3-3.5M credits per hour). Not using any abilities other than charging 4 at the start of the round is actually the best part, I pretty much never have any energy anyway.
I solve the forma problem by pretty much only using a tiny handful of weapons and sticking 5-7 forma in them. Just added Amprex and Synoid Gammacor to the main pool, before that I only ever used my Prisma Grakata (because riven), Sybaris Prime, Tigris Prime, and Akstiletto Prime. Never saw any reason to set up a melee weapon other than Atterax either. The nerf was retarded but afaik it affects all melees equally. I'd like to try Scoliac but missed the bus on getting in on a riven before the price went insane. Still need to finish up my Lenz, Atomos, and Lanka; everything else is MR fodder imo, only thing that might change my mind is getting another good riven like my Grakata one.
Speaking of that, anyone happen to know a source for Ignis Wraith BP? I refuse to pay plat for something that costs them a few k credits, but I always seem to miss it when people offer them on reddit.
Also, if anyone wants to do some farming specifically for Neo R1 and Lith B4 rares tonight or pretty much anytime tomorrow, send me a message (Svieri). Got everything else just by leeching with my radiant relics from ESO, plus a full Limbo Prime set and finished off my Zephyr to boot. The Boltor and Rhino rares I guess I'll need to put at least some effort into.