MNK 4.0 Changes . . . I'm not a fan tbh

[Bhearil]

Bootshine is used every 12 seconds currently with a ~2 second global under GL3. That means you get 5 free crits every minute. At a 30% proc chance, that's worth 1.6 chakra a minute.
You use 5 non-guaranteed weaponskills in a 12 second period. With a 50% crit chance, you'll average 2.5 crits. That's an additional 12.5 crits per minute, or 3.75 chakra.
Adding it up, our base chakra generation through Deep Meditation is 5.15 chakra/minute, or 1.03 TFC a minute. With 30 weaponskills used during a minute, that makes Deep Meditation worth roughly 8.5 potency per weaponskill.

And thats with a such high unrealistic 50% critical chance, this is our new mechanic for what we were nerfed almost everywhere, aside for a 15 seconds 5% party buff...

[Shurrikhan]

Bootshine is used every 12 seconds currently with a ~2 second global under GL3. That means you get 5 free crits every minute. At a 30% proc chance, that's worth 1.6 chakra a minute.
You use 5 non-guaranteed weaponskills in a 12 second period. With a 50% crit chance, you'll average 2.5 crits. That's an additional 12.5 crits per minute, or 3.75 chakra.
Adding it up, our base chakra generation through Deep Meditation is 5.15 chakra/minute, or 1.03 TFC a minute. With 30 weaponskills used during a minute, that makes Deep Meditation worth roughly 8.5 potency per weaponskill.

And thats with a such high unrealistic 50% critical chance, this is our new mechanic for what we were nerfed almost everywhere, aside for a 15 seconds 5% party buff...

At a 1.88 rotation, you can slip in an extra Boot/True/Snap per Demolish while losing perfect-reapp potency only on DK and Twin, gaining 75 (minus natural crit margin) +40 + 100 WS potency. This satisfies the lowest modular for maximization of DK/Twin duration, making it ideal to for increasing the frequency of Bootshine in order to better fish for Deep Meditation procs through crits. It is not, however, the most efficient modular for Demolish (11.17 GCD per Demo), and will forgo two ticks per minute. As it would require a 1.75 to perfect Demo even with a perfectly continuous server poll, and the 100 potential potency of tick globals between Coeurl GCDs without Demolish applied falls short of the opportunity cost of a clipped Demolish (50-100 potency less than Snap Punch depending on the next global sync), this seems acceptable.

Some more maths, using a Deep Meditation-optimizing rotation.

At a crit rate of 30% (37.52% with IR factored in since at 1.88 GCD it affects 8 skills per minute or contributes .0752), the increased attack rate of 1.4 seconds per Demolish allows for:

an increased auto-crit worth 50 TFC by delaying DK from per 6 GCDs (.97 GCD or 2.1s DK/Twin clip) to per 9 (1.92s or 1.02 GCD gap, where tolerance barely treats this as a sub-single GCD gap, costing only one skill's bonus potency)

and, by delaying Demolish from per 9 GCDs (with .76 GCDs' clip) to per 12 (.83 GCDs' gap), an opportunity gain of 69+40 WS potency per 9 GCD (16.92s), 100 WS potency per 12 GCD (22.56s)—or 10.88 WS pps,

an additional 2 WS per 56.3s or cycle per 84.45s resulting in an additional 400 to 544 WS potency or 4.74 to 6.44 pps

and 1 more WS in IR window for an additional 24 to 63 Crit ppm or .4 to 1.05 pps

and a TFC potency bonus of 50 per 9 GCDs, and 15 per IR, * a 30% chance, or a total of 192(.3) 57.6 ppm or .96 pps

TOTAL of up to 21.57 pps gained

at an opportunity cost of 29 Bonus potency (DK to DK, Twin to Twin) per 9 GCDs and a tick cost of 50 per 40.66 seconds, or 2.28 pps
and relative potency loss from reduced Det/CR/DHR.

NET of 19.29 pps gained.

Appendix:
At a 30% crit rate (37.52 at 1.88 or 37.5 at 2.15 with IR included) increasing Bootshine cyclical usage by 50%, 33% in actual proportionate frequency, from 1 per 6 GCDs to 2 Bootshine per 9 GCDs, increases Deep Meditation ppWS contribution by only 7.24%.(?)

1/6 Auto-crit and 5/6 Natural: ((50 + 18.75*5) / 6)(.3) = 7.19 ppWS
2/9 Auto-crit and 7/9 Natural: ((50*2 + 18.76*7) / 9)(.3) = 7.71 ppWS

NOTE: Difference between the above suggested DM /WS potencies and these are due to the reduced crit chance, trading 50% for a more reasonable 30% (37.5% with IR factored in).

Conclusion: Especially given that we can no longer use finer plateaus by shaving modulars on stances via Fracture and Touch of Death, it'll be very difficult for Deep Meditation to make up for the base potency lost, even in a rotation that optimizes DM contribution.

[MrHobbit]

Bootshine is used every 12 seconds currently with a ~2 second global under GL3. That means you get 5 free crits every minute. At a 30% proc chance, that's worth 1.6 chakra a minute.
You use 5 non-guaranteed weaponskills in a 12 second period. With a 50% crit chance, you'll average 2.5 crits. That's an additional 12.5 crits per minute, or 3.75 chakra.
Adding it up, our base chakra generation through Deep Meditation is 5.15 chakra/minute, or 1.03 TFC a minute. With 30 weaponskills used during a minute, that makes Deep Meditation worth roughly 8.5 potency per weaponskill.

And thats with a such high unrealistic 50% critical chance, this is our new mechanic for what we were nerfed almost everywhere, aside for a 15 seconds 5% party buff...

you are missing 1 important thing here that you asume the crits you get will aply to your weaponskills and not your AUTO ATTACKS what makes our chakra generation silly since we got tripple rng in it nr 1 crit nr2 crit a weapon skill not a auto nr30% chance for it to proc