When I bought the Charles Grant figures that I call 'the Grant Collection' - which I would love to develop (ie, find and acquire ones like the Assyrians) - I originally decided to leave them well alone.
As time has gone on I've moderated that view. The figures themselves have been rebased and used since Charles Grant owned them anyway, plus some of them need to be refurbished a bit.
Currently I'm working on peltasts, and the collection included 110 Garrison G11. It seemed reasonable to rebase 24 of these as peltasts to give me a second unit. I'll probably rebase another peltast unit, not sure about some nice looking 10 man units as psiloi?
After that, I'm looking at the cavalry.
I've already got quite a few of these in my armies but it's a figure I really like - it would be nice to see this unit rebased and in action.
Another candidate is this mob. Some of the spears need a bit of attention, but the shields are superb. They'll be rebased as mediums/heavies rather than their current light bases.
One large group of figures are the Garrison Persian cavalry. I haven't started rebasing the 'S' Range Persians yet so might wait until then before I consider my options with the Grant figures.