New strategy ideas for improvement of the game.

I have a new idea to make the game more interesting.

Every player will have a option from inventory to chose a fellow companion unit that will help him with epic boss events,raid boss,guild wars,pvp and other events exept box event ,
that felow companion you can upgrade it on higher levels of strength from 1 -10 Lv
Felow hero companion can be chosen from 3 categories:
Beast,magic,infantry
The good thing is that will bring us a strategy,the unit that you chose for felow hero companion it will be different because those units you can win just during events.
Depends on your right decission (wich you think it is right for you)to upgrade the best hero companion will determine and your total strength .

This reminds me on fun games from 90's when you had a sorcerer as a sidekick or dwarf to help you on quests amd fights.
Do you like this idea? And what do you think about it?