@sheepz
I guess it depends on how basic is 'basic'. Anyhow, I have an A1200T/Z4 system fitted with a Mediator and a Voodoo5 card. It works a treat, tho' I couldn't get the Voodoo PCI to run alongside a Picasso IV in the ZII slot. Timing issues I think.
Provided you set the Mediator jumpers as described in the manual and set everything up using the current edition of MedConfig (available on Elbox site), you shouldn't have (m)any problems.
Make sure you assign the required screen mode to the Voodoo using PicassoMode (in Prefs).
Cheers,
JaX