I'm actually giving Model A to Otori. With Model A he gets twin hand energy cannons, the ability to transform into others with the A-Trans ability, as well as a smart ass Biometal... that's also a bit of a pervert... that also means well, but can come off as rude.
Model A:

MegaMerged:

(The armor that Grey [the character in that pic] is wearing. Not the character itself, just the armor.)
This Biometal's Mega Man form allows the use of twin hand cannons, as well as the A-Trans copy ability, in the use of DNA Cores. Unlike other Biometals, Model A's Weapon Energy is perpetual as it can continually regenerate over time without the need of Weapon Energy items.
Attacks available include the powerful Charge Shot, the before-mentioned A-Trans ability, and the Homing Shot. The homing shot is capable of targeting up to eight enemies over a reasonable range. However, unlike Vent and Aile, the hand cannon's shots differ greatly on who is using them. For Example: Grey can fire up to three shots and his Charged attack fires a plasma orb similar to that of Model X's first Fully Charged Shot; while Ashe can fire up to two larger and more powerful Laser Shots, and her Charged attack fires a thick, powerful laser beam with Gemini Laser properties. Grey's Homing Shots have a wider range and fires up to eight shots on screen, while Ashe's range is more narrow, but longer and fires a single energy torrent that travels from target to target.
The A-Trans ability is perhaps even more powerful than Axl's transformation ability. For almost any enemy that fights Model A, loses, and fails to retreat after losing to Model A ends up getting scanned, and having a sample of the opponents DNA extracted in the form of a core. Once then the user of Model A will then forcefully (as in against his/her own will) absorbs the DNA Core that was extracted. This process is both incredibly painful for both the user of Model A, and his/ her opponent. Once this process is complete the user of Model A will be able to use the A-Trans ability to transform into the person they just extracted Data from.
This also counts for other Mega Men to. An example of this was when Grey/ Ashe (depends on who you chose at the beginning of the game) defeats Aile/ Vent, users of Model ZX (a combination of Model X and Model Z when Mega Merged. Please note that Model ZX does not mean that the two fuse permanently. They still remain separate Biometals when not in use, and could still be used individually.) Well when you defeat Aile or Vent, Grey or Ashe ends up scanning the DNA Core of Aile, and Vent in their Mega Merged forms. This granted Grey/ Ashe the ability to transform into Biometal Model ZX. This can possibly make Model A the strongest Biometal of them all just due to the A-Trans ability.
I think it is a reasonable power up for Otori.