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With the new Those Who Serve errata, how does this work when combined with other cost reducing effects?

For example, Meishodo Wielder reduces his own cost by 1. If I play TWS with Meishodo Wielder as first player, does he cost 0 or 1? Another example is if I trigger Yasuki Procurer in the dynasty phase. If I have a 1 cost character, and I trigger Yasuki Procurer, I expect him to cost 0. If I trigger TWS now, does it still cost 0, or does the TWS minimum apply and have it cost 1? What about if I have a 2-cost character? Trigger Procurer to have it cost 1, then trigger TWS and it should still cost 1. What if I flip the order of the effects? I use TWS, reducing the cost to 1. Then I use Yasuki Procurer, and I would expect this to reduce the cost to 0.

All minimums must be observed regardless of the order of the cost reduction effects; therefore, the higher minimum is the limiting factor. Meishōdō Wielder + Those Who Serve still causes the shugenja to cost 1 (not 0).
If you use two Yasuki Procurers, you can reduce a 2-cost character’s cost to 0, but once you apply Those Who Serve it “bottoms out” at 1 cost.

[Tyler Parrott, Mar 30 2020]

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I have a bit of a follow-up question to your answer from last night. There's a few edge cases that I just want to confirm.
1) Eager Scout + TWS. Should cost 0 to buy (using Iwasaki Pupil as precedent).
2) Meishodo Wielder + Yasuki Procurer + Yasuki Procurer + TWS. Should cost 1 (2 cost body, 4 fate reduction, 1 fate minimum).
For 3, we'll have to define "Anti-TWS" which increases the cost of characters by 1.
3) Eager Scout + TWS + Anti-TWS. Should cost 1 (0 cost body, 1 fate cost increase, 1 fate reduction, 1 fate minimum)

Are these correct?

Uh, yes. That should be correct: if Eager Scout had its cost increased and then re-reduced by TSW, it would still cost 1 as TSW cannot reduce it below 1.

[Tyler Parrott, Mar 31 2020]