Sure Sifo Dyas isn’t a mayor character in the Story. But that’s precisely why I see potential to implement him into TPM. We don’t know exactly how he looks and speaks. Yet if we change the Hologram there would be plenty of scenes to utilize to change the story substantially.
I think there is some massive potential not just to alter TPM but AOTC as well and help connecting the two better.
So here’s what I’m thinking:
For TPM:
-have sifo dyas as the link between Sidious and the Trade Federation; maybe he could make some remark about a clone army much like Kylie did in TFA
-Qui-Gon is friends with Sifo Dyas and senses something off, once he sets foot on the trade federations ship (much like Vader senses obi-wans presence in ANH)
-when Qui-Gon meditates in the final duel with Maul show how he realizes that it was Sifo Dyas he sensed on the ship and that he was involved with the trade federation. Now when he dies this information is lost.
Now AOTC:
-Instead of the clone army being made for the republic change its customer to be the trade federation, who want to replace their droids which failed them on Naboo. This would also explain why Kamino was deleted from the Jedi archives.
-after Obi-Wan’s discovery on Kamino the Republic decides to pay the Kaminoans tripple (it’s set up by dexster’s description of them that their loyalties lie with the money only)
-change poggle’s subtitles to express the betrayal the separatist experience after the clones enter the battle on geonosis.
These simple changes would do three things: 1.add a character driven subplot to TPM that is set up in the opening and resolved in the end.
2. Connect TPM and AOTC
3. Remove the mystery surrounding Sifo Dyas and do away with the problem that nobody seems to be suspicious of an army that was secretly made for the republic and ordered well before any mayor conflict was on the horizon.
This literally has „evil twist“ written all over it.
Now it seems that the republic was able to snatch this army from their adversaries and nobody could suspect that this was part of a greater scheme.