Well, there is few of us still actively playing. This including me.

So what can we assist you?

Don't bother with comparing ultimates level digimon

get at least one to mega and start from there

preferably if it got aoe signature skill to farm

if u got a lot of time u can keep creating new account and try at the 200 digistones capture for +4 mega which will save u months of effort

The base digimon (which you want to make it stronger) will remain the same skill set, DNA and leader skill.

While the partner digimon will be sacrifice. All the partner digimon skill will not transfer to the base digimon.

For me, I always go for the 100stones pull for mega event. At least it guarantee of a +1 mega.

Poyomon down the line will also have Metalgarurumon.
You can check this website for the evolution line.
https://takatomon.net/

not bad.

got aoe farmer already.

any major leader skill and legacy or medals maybe?

remember to use the free pull once a day

kudamon with major crit is good.
i got the same one and is now a tigervespamon.
he's best suited for multihit like milleniumon,tigervespamon,megagargomon,serapihimon,lordknightmon and ravemon BM from his digivolve line.

as for the event, a +4 digimon need 21 frag so to not make it easy for us to make one they increase the cost of bytes.
and frag can be use for fodder in awakening and resist training also.
if it's too cheap it will be too easy for us and bad for their business.