Do it!
Makes sense for lots of reasons but mainly:
Common logic is essential across a desk range.
It's a good way of working! zeros has evolved as the needs of users and the capabilities of the desks have improved. Being able to roll the improvements backwards to older desks is great. Moving forward the short term bump for older users is worth it for the commonality across the desks and the ease of use for new users.
I would guess that the new way of working would be a common major software number? Ie zeros v8 - keeping the last version of zeros avaailbe for download somewhere for those that didn't want to upgrade might be worth it ... But not supported ?
