Recommendation and question about the new rank system next season

First from Joe that we gonna have a new rank system, the one that stands out the most to me is the mini rank with their positions like Bronze in jungle and gold in top lane. So are we still gonna get...I can't explain this, what I meant is let's say I have gold 4 in top, jg, support, silver 2 in adc and silver 1 in mid, am i going to have a final rank of silver 1? or 5 different ranks

Next is recommendation of easy champs in different lane, because of the new rank system I cannot hide the fact that I am only good at tanks and supports. Wanna try some different roles and champs to have a solid rank in every position First my playstyle is very safe, I do not like playing high risk high reward champ, I would like just sit under tower farming and wait til late game team fight to try to win. I ABSOLUTELY LIKE LATE GAME TEAM FIGHT. So prefer taking late game champs that are good at team fights.

For Top: I like to play champs with heavy cc, decent laning ability and late game team fight ability. currently good at , decent with , trying but so far horrible with him.

For JG: I also like to play late game team fight champ and very good ganking ability. currently good at , decent with , used to play but he is horrible this patch and at ganking. Also want to know an easy carry type jungler.

For mid: I am absolutely garbage, never really played mid, mages and assassins are my two worst roles. specially mage changes coming next patch, where the mana regan is worse, mage autos are horrible, I am pretty bad at farming already. havnt really try anything in this role, champs like does not really have mana issue and decent laning. But I have no experience with mid.

For adc: cannot play hyper carry champ like Only want to play champ that has dashes for safety(I am horrible at kiting) used to good at and , but still wanna practice on one more champ that fits my style capable at all support champs