I always loved FoF. It's just pure card advatage/Tutor and also helps to get the Library running. Card advantage is what a great deal of Keeper is about so you should definitely include it. This also gives me an headache as I haven't got enaugh draw in my deck. I should at least run 1 additional Skeletal Scrying but what to cut?

I am not an exprienced gifts player but I figure it must be a bomb in finding combo pieced. Say you have crucible out you can use gifts to get Fastbond/Zuran Orb/ Regrowth/ Yawgmoths Will and you are ready to go off.
With Fastbond/Stip Mine and Zuran Orb/Balance I have two Armageddon effects in the deck which should be enaugh as a too heavy mana denial would take up too many slots and is too slow/ineffective. Dust Bowl doesn't seem as an ideal choice to me as you have to tap it each time you use it which makes it unabusable with Fastbond/Crucible.

Mystical Tutor is already in the deck, you might have overlooked it. I didn't include Vampiric Tutor as 1.: I don't have that many silver bullets in the deck to tutor for (just bombs like Balance, Mind Twist...) and 2: It gives you card disadvantage with basically giving your opponent a Time Walk. Mystical Tutor is in because it can be dumped to FoW or Misdirection from the sideboard.

I thought about including Morphling but what to cut?

I haven't been playing Magic for about 5 years now and when I started playing again I was really surprised finding the Keeper archetype dead. I want to build not an too competitive but modern Keeper build and as I find the Fastbond compo quite interesting I might just as well post my decklist in this thread:

7 SoLoMox
1 Lotus Petal

1 Demonic Tutor
1 Mystical Tutor
2 Cunning Wish
1 Merchant Scroll

4 Force of Will
4 Mana Drain

4 Brainstorm
1 Fact or Fiction
2 Gifts Ungiven

1 Ancestral Recall
1 Time Walk
1 Tinker
1 Yawgmoth's Will
1 Balance
1 Mind Twist
1 Regrowth

1 Fire // Ice
1 Echoing Truth

1 Darksteel Colossus

2 Crucible of Worlds
1 Fastbond
1 Zuran Orb

3 Polluted Delta
2 Flooded Strand
1 Library of Alexandria
2 Underground Sea
2 Tundra
2 Island
1 Snow Covered Island
1 Tolarian Academy
3 Gemstone Mine
1 Strip Mine

SB: 1 Extirpate
SB: 1 Constant Mist
SB: 1 Stroke of Genius
SB: 1 Hurkyl's Recall
SB: 1 Darkblast
SB: 1 Stifle
SB: 1 Coffin Purge
SB: 2 Pithing Needle
SB: 1 Vampiric Tutor
SB: 1 Energy Flux
SB: 1 Misdirection
SB: 1 Swords to Plowshares
SB: 1 Rack and Ruin
SB: 1 Red Elemental Blast

The sideboard is still highly experimental and should function mainly as a wishboard. Perhaps it should be streamlined a bit as REB up to 2-3 so I can board them in game 2. I'm still not sure about the primary win condition as the fastbond combo seems rather slow so more draw should be good (Timetwister?, Skeletal Scrying?).
I hope you have some advice,
Felix