What's the deal with T20 bowling?

How much does bowling matter in T20s and how does one measure the potency of a bowler in this format? What are the measures of excellence for a T20 bowler? 
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Talking Points:

How does one describe a good T20 bowler?
Is it possible to separate actions and outcomes for T20 bowling? 
A format that offers the bowlers almost no leverage
What is the role of bowlers in a contest designed to be between bat and bat?
Does a great T20 bowler need any particular skills? 
The value of bowlers with unconventional actions
What Jasprit Bumrah does well in T20s
Why T20 bowlers can't be viewed in the same way as Test or ODI bowlers
Can we gauge bowling in T20s before hitting has reached its full potential?
The future of T20 bowling - and why some rule changes can bring bowlers into the game
The Harshal Patel problem for T20 bowlers
Are teams being inefficient when paying huge sums for bowlers?

Participants:
Siddhartha Vaidyanathan (@sidvee)
Mahesh Sethuraman (@cornerd)
Ashoka (@ABVan)
Karthikeya Date (@cricketingview) | Substack | ESPNcricinfo
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Related:

Hitting v Batting: the choice that dictates the shape of a T20 contest - 81allout podcast
Bowling doesn't really matter in T20 - Kartikeya Date - Cricketingview
Ferociously fast and thrillingly direct: how Mayank went bang, bang, bang - Karthik Krishnaswamy - ESPNcricinfo
'If you go searching for wickets in T20, you're playing into the batsman's hand' - Samuel Badree interview by Nagraj Gollapudi - The Cricket Monthly
ICC recommends ODI rule changes - Cricket Australia