What is the effect of changing the bitcoin MAX_BLOCK_SIZE
?
To support this new block size, the following constraints must be viable for all full nodes:
Constraint  Condition  Value  Units  

Bandwidth  must be at least 

Mbps
A megabit is 1000 × 1000 bits.


Data Cap  must be at least 
?
1 MB block ×
(1 ÷
600) blocks per second ×
60 × 60 × 24 × 365 seconds per year
÷ 12 months per year
÷ 1024 megabytes per gigabyte ×
8 peers
=
? GB per month
=1*(1/600)*(60*60*24*365)/12/1024*8 
GB
per
A gigabyte is 1024 × 1024 × 1024 bytes.
month
The duration of a month is calculated as 365 days ÷ 12 months.


Supplied Disk Capacity  must be at least 
?
1 MB block ×
(1 ÷
600) blocks per second ×
60 × 60 × 24 × 365 seconds per year
÷ 1024 megabytes per gigabyte
=
? GB per year
=1*(1/600)*(60*60*24*365)/1024 
GB per
year
A year is 365 days.


Transaction processing  must be at least 
?
1 MB block ×
1024 × 1024 bytes per megabyte ×
(1 ÷
600) blocks per second ÷
226 bytes per tx ×
4 hops
=
? tx per second
=1*1024*1024*(1/600)/226*4 This assumes the smallest transaction size, since it results in the highest (worstcase) tx/s. However, the computation to process a transaction varies nonlinearly, so even if you can process ? simple transactions per second, you may not be able to process one large complex ? MB transaction quickly enough. 
transactions per second 
How does this affect the ability of the bitcoin network to achieve the requirements?
A full node operator must be able to meet the following ongoing costs whilst still remaining incentivized:
Constraint  Price  Info  Annual Cost  % Cost 

Bandwidth 

+
Costs are proportional because this tool evaluates 'the cost of bitcoin' not 'the bill you get'.

$? 

Supplied Disk Capacity 
TB drive for $ 
$? 

Transaction Processing 
$ lifetime cost for computer to process tx/s 
+ 
$? 

Labor 
hours per year at a rate of $ per hour 
+
Including research, setup, maintenance, etc

$? 

Initial Block Download 
If block size changed today, it would consume ? GB and take ? hours to download the blockchain from scratch on 

TOTAL: $?
per year 
This is an extremely complex topic with subtlety and nuance.
Without a full understanding of these complexities, there may be risk to changing the bitcoin max block size.
This project is on github  https://github.com/iancoleman/blocksize_calculator