I wish... for a custom plan

They already do.  It's called bundled pricing.  Just like when you go to an all you can eat buffet or smorgasbord.  One low price gives you access to all the eats you want.  Or you can pay more for a la carte pricing.   Using your example, the ALL APPS plan is still the best value.

On average, each app costs $21/month.  If you use 3 or more apps, that would cost more than the ALL APPS plan.  So you gain nothing doing it that way.

Don't expect Adobe to carve out more bundles.  They won't do it, they have no reason to.  Currently, you can pick & choose the apps you want and pay more per app or get the bundled plan and pay less.  It's your choice.

you are correct: adobe offers very limited ability to customize your subscription. if you want to make a suggestion to adobe about that (or anything else), use this, https://www.adobe.com/products/wishform.html

The typical subscriber uses 3-4 apps, that's all. So your needs are pretty much normal, and All Apps is aimed straight at you. (Think "all you can eat buffet" - no discount if you choose fewer dishes) You can subscribe to those apps separately for about the same price.

Hi there, 

We have a plan for Photoshop and Lightroom, with which you can add Acrobat and Illustrator as a single app. 

There is no such plan that has the above-mentioned apps in particular. 

You may see all the available plans here: https://www.adobe.com/creativecloud/plans.html

Thanks 

Kanika