There isn't anything else to strive for except for the trophy you get for reaching Level 50 in all 5 Factions. at least for me anyway lol.

I've found if you link accounts when your faction is already fifty, the mobile version won't honor the unlock. It only happens when you level up at 49.

So it should unlock when I reach Level 50 with the current faction I'm in? When I started playing the mobile version I had already maxed out Lin Kuei and had moved on to White Lotus.

I leave as soon as the faction war for the week ends after I hit 50, since I'm going for 50 in all factions. Once I've made that achievement, I'll settle on a faction, basing it on which menu screen I like the most. It'll probably be Lin Kuei or White Lotus. Still shocked that Black Dragon won this week - I never thought I'd see that happen. It was the first faction I picked.

Pretty much once you reach level 50 is when I would do it, unless your faction is winning and you want to see the last faction kill, then you have to wait until your faction wins, see it, then change.

I am currently just waiting to get to level 50 then changing, I have level 50'd every single faction so far except for SF which i am working on now, then I will go back to Brotherhood which will remain my faction forever since I like its kills the best lol

I hit level 50 in all factions a week ago and I still haven't got the mobile unlock. I think it's bugged

Dumb question, but just in case, we don't have to play mobile to get the trophy do we?