I also wanted to share my disappointment this and other features (like more modes) are locked behind enterprise.
I can appreciate that sometimes things can be trickier/resources intensive behind the scenes and that comes with a cost too. So I’m not suggesting that these are just included in Organisation - I’d be happy to pay for these additional features in some form but the jump to Enterprise is expensive and not viable.
I would love to see a handful of features be paid-for bolt-ons if you want them. For example:
Need more modes?+$4/user/month
Dev mode? +$5/user/month
Variables scope on the API? +$x/user/month
Let us add on and pay for the things we need on top of any plan 
If Dev mode was available as a stand-alone paid add-on, all of our developers would have it instead of just getting by with a free account 