Hello,
Yes, I was aware of this possibility.
However with other plugins it is possible to directly synchronize the dropdown and multiselect fields between the two systems (in this case SugarCRM and HUBSPOT).
Using supporting textfield fields represents:
1) a downgrade from the features used so far
2) requires a large amount of custom CRM side that would be useless.
So I think it is essential that the direct synchronization from the plugin to the crm is understood (without support fields).