I'll List these features in order of how necessary they are/how much people want them.

Hair Change for SSJ

Now, this is an obvious one that many pople throughout the Xenoverse Community are wanting in future updates or games. It is a must have. The SSJ3 hair change was the same but expected however, different SSJ hair styles for different base hair styles would more customisation and personalisation to your character and the game.

Frieza Race/Buu Race More forms

We were blessed when Golden Frieza was introduced but Pure Majin was a dissapointment. Here are some things that can be done about it. I decided there should always be a drawback for every form like lower stamina regeneration, etc. as it makes it seem more realistic

Frieza Race Forms

We could make Frieza Race quite weak but the ability to go through multiple forms. Obviously this would take a lot of effort and hard work to add but is certainly possible in this day and age, also, it is what the Frieza Race are recognised for, their multiple forms. (P.S. When I add the percentages for each form I am doing the percentages added from the base form).

First Form - High Speed, Low Basic Attack, Low Health

Second Form - High Speed, + 5% attack, + 10% Ki Recharge, + 2.5% Ki Blast Supers, -15% Stamina recharge (3 Ki Bars to Use)

Third Form - Very High Speed,  + 7.5% attack, +20% Ki Recharge, +5% Ki Blast Supers, -25% Stamina Recharge (4 Ki Bars To use)

Final Form - Very High Speed, +10% Attack, +25% Ki Recharge, +7.5% Ki Blast Supers, -30% Stamina Recharge (5 Ki Bars to Use)

Golden Form - I believe Golden Form should be hard to obtain but also very good. As it is comparable to SSJGSSJ, thats why I believed it should have high stamina drainage but high damage in return.

Max Speed, +20% Attack, +35% Ki recharge time, +12.5% Ki Blast Supers, -50% Stamina Recharge time + stamina drainage similar to Xenoverse 1's SSJ Ki drainage but for stamina and slightly faster. (6 Ki Bars to Use)

Majin Race Forms

Majin needs that extra transformation as it seems to be missing that push it needs. In Xenoverse 2 it seemed very weak compared to other races including the Earthlings who seemed stronger than the Majins.

Base Form - High Health, High Stamina Regeneration, Low/Medium Attack.

Super Buu - +10% Attack, +5% Stamina Regeneration, +5% Strike Supers, -10% Ki Regeneration. (3 Bars to use)

Pure Majin - +17.5% Attack, +15% Stamina Regeneration, +15% Strike Supers, -20% Ki Regeneration. (4 Bars to use)

Saiyan

Yes I decided to add another Super Saiyan Form which would truly just be for fun but I'd know a lot of people would use it as it would be very cool.

Ultra super Saiyan - +50% Attacks, +15% Ki Blast Super, +15% Strike Super, Drains Stamina very quickly, Drains Ki very Quickly, -50% stamina recharge, Cant fly quickly. (5 Ki Bars to use, Maybe could be achieved after Future Super saiyan?)

Physical appearance would be easy just give Broly/Super Trunks like hair and increased muscles to make them look Massive. This would be a form that would maybe be used for a quick combo and not used for extensive periods. I would say usage would be 20 seconds max. However, you would be 2x slower, draining ki and stamina quickly and lower stamina recharge time butyo u do get that 50% boost in basic attack and 15% boost in Ki and Strike Supers. It would be an interesting form and very fun to use. Maybe it could have a longer transformation time giving people more of a chance to stop it. It could maybe be gaiend after you do some missions with Trunks which would be very hard. Maybe it could be just the second form of Future Super Saiyan?

Who knows? Comment down below what you think of everything i wrote today.