I don't think that means that they weren't hunting the newly formed Radiants the whole time, only that recently, rather than laying low and staying solo, the new Radiants had been grouping together more so there wasn't any room for leniency anymore.
Probably not easily. They'd have to Invest in Sel over a long time anyway, and even if they did manage to put the Dor back into the Spiritual, the whole magic system would probably get temporarily wrecked until or unless someone Ascended.
Malu ducked behind the bar, suddenly realizing that he probably should have thought this through more and hoping to the Heralds something else would draw the thing's attention while there was still some tavern to rebuild.
Stronger might not be the best way to think about it. Vin is a different magnitude than Wax is, due to the raw difference in power between a Mistborn and a Misting or even a Twinborn.
Malu raised his hand, sucking in Stormlight, using his Illumination to manifest a series of attacking figures around the creature, hopefully distracting the thing.
Yes, people take stuff too seriously. This one isn't fanart, but it'll get the point across (wow I hate reddit so much but it's the best I can do on short notice):