It get's easier if I abandon Approach all together, but I'm not fully convinced that having access to some kind of clock isn't worth it. Decking your opponent by normal draws is quite the game plan, and Approach let's you win games you shouldn't. I've been running the Bant version for grow from the ashes, which is very powerful and can help close games fairly quickly with approach. Black offers a lot of tools.

Black has access to 4 duress, which is particularly good in the diverse threat meta, and is the ultimate pace maker in counter wars. Duress with counterspell back up is a savage beating to straight U/W control. Duress is also a proactive tool, so pairs well with trying to land an approach, teferi, or strip opposing planeswalkers at key times. The eldest reborn is some sweet tech that has surfaced, and is pretty much great against everything. The fact that it can get planeswalkers to is just so much gas, effectively acting as another Teferi. Going into black also let's us get away from the enchantment removal. It's not the biggest liability and they are certainly efficient, but people are preying on these from side somewhat, and cast out wars are annoying and fragile. It can create a tempo window if they remove or bounce it, and the black removal just happens. We also can play a miser's profane proccession, which I have a feeling is going to overperform. Playing a decent number of these flip cards also still give us access to mana acceleration, which helps still get an approach ahead of schedule and win control mirrors. We also can play Kambal and Blood Fast. Kambal is a ridiculous win con against control, and having access to blood fast in a control mirror is Sweet. We can run Gonti, which also generally good against everything, and super good against control. History of Banalia is still a concern, but not untenable. Overall, I think if we hone it right, it should be the apex control deck, and also have the same if not a little more robust plan against the rest of the field. I'll need to compare lists with esper midrange and B/W vehicles.

As an aside, the mana right now is GREAT for control decks. Anyone who thinks the mana is bad just hasn't figured it out yet. Check lands, cycling lands, and utility lands across color favor control decks for sure. Running three colors is relatively easy, as long as the third is a light splash. I might be pushing it with vraska's contempt, but it also might work out just fine! Dual color decks don't have 12 awesome dual options, but they have 8 and a bunch of functional options, so top complaining? I think three color manabases are actually easier than two for this reason.