Tips for replacing obsolete units?

[Nethog]

Thanks for the comments - there were some good ideas mentioned that will help me. An observation however: no-one seemed to offer an overall strategy that helps minimize the tedious micromanagement of units upgrading stemming from unit obsolescence. I still think the game should have additional functionality to make retrofitting units easier, something like the "upgrade facilities" button in the Construction Queues window. If I placed 1000 Kt of Weapons Platforms on a planet with 2000 Kt cargo capacity, I should be able to "retrofit" the weapons platform to a new design without having to jettison the WPs, and re-build them. Doing this for an occasional single planet is no big deal but when I am trying to keep 50 planets updated it becomes a tedious task - and I LIKE micromangement, but not this kind of tedious stuff. I would also like to be able to "update" the units on all construction queues to use a new more advanced design without having to delete them and add the new design.

Am I the only one who feels this way or are there others that agree?