Mine came with quite a few attachments, but very little tooling. Deckels are much more common than Mahos. You can get most any attachment - it will just cost a lot. The Mahos you rarely see the attachments for sale at any price. I have the #40 S20x2, taper so the tooling is available (either expensive or by waiting patiently) - and after ~3 years I was able to get the both #40 and U2 complete imperial collet sets. I have not picked up the metric collets as I don't use any metric tooling. With the small work envelop, the collets are pretty well essential.
I had the chance to pick up a second, near identical machine (a 1965 vintage) - I accepted sight unseen at $1500 and had it shipped across the country. It also came with the fixed table (like yours) vertical, horizontal and slotting heads - plus the spiral unit (which is what I was really after). I actually use the fixed table most of the time, in favor over the universal table (which came with the first MH 600). The fixed table gives slightly more head room and is enough lighter than I can safely lift it. The universal table is quite a chunk to try to lift / align. I have not done anything with the second MH 600 - other than cleaning up the table and the spiral unit (had to cut 25 change wheels and did that on the Maho - the only time I have used the horizontal set up).
I put a DRO Pro on - and it is very nice to use. A higher top speed would be nice, but a pain to be switching heads - small cutters still work fine, you just have to keep the feedrate low. The only high speed head I've seen offered was about 4 years ago (in Germany).
Enjoy that FP1.