For broader work, I use an HP-TH. Similar in capability to an Anthem on paper, but with some key differences. I don't have an Anthem, so I can't compare directly, but I think the trade off between the two is the HP-TH will get you broader spray than the Anthem, while the anthem will have more crossover with fine line ability. Basically the anthem is journeyman which can do both, but not quite as well as a specialist brush, whereas the TH is more specialized for broad work the way the Micron is for fine detail. The area of utility overlap will be larger with the Anthem, but a TH & Micron combo will get you a a wider overall capability range.
I want to say which one is better depends on how big you consider too big for the Micron (i.e. at what size line/spray pattern would you put down the Micron and reach for something larger, or at what size would you rather put down the big gun and pick up the Micron), Lines of about 4 mm are the TH's comfortable low point, in my experience: it can technically go lower, but it gets hard to see what you're doing due to the head size, and the lines aren't as crisp. The Anthem, from what I've seen, can go almost as low as the HP-CS.
The TH will likely have an easier time with larger pigment particles, due to both the needle geometry, and the fact that it's gravity feed. It can also operate at lower pressures due to the latter, and has that MAC valve you want. Both have large color cup/bottle sizes available, but the Anthem's are much cheaper and easier to source.
If you just want to shore up the Eclipse anyway, I highly recommend getting a KCS trigger + soft spring. The KCS trigger is slightly taller than the stock Eclipse trigger, and changes the feel a surprising amount. Not just in terms of finger travel: it changes the distribution of force in a way that makes the trigger operation feel mechanically smoother. I highly recommend the KCS trigger to anyone who owns any Eclipse because of this.
I don't recommend the .5 kit for the Eclipse if better control is what you're after. The .5 kit allows for more spray volume, but the trade off is noticeably shortened trigger travel between "fine line" and "full blast". I have the .5 kit for my CS, and I don't really feel it's worthwhile in general, as the difference in spray volume and paint thickness it can pass is actually negligible.