Concerns of a jungle main

Have to say as a jungle main nerfs to the jungle are not needed, been playing league for 2.5 years, jungle being my favorite role. The chilling smite nerf range isn't the nerf that I mind too much but the change to switching your jg for 250 gold is kind of hurtful especially in the early game. I personally would like some more context into why this change was implemented. Currently the patch notes doesn't do a very good job at letting me know what the problem is with changing your jungle item for free before you enchant it, I've always felt as if allowing you to exchange the jungle item pre-enchant for free helped a lot of junglers early game since you could get trailblazer to help with the difficult early clears on certain junglers before switching to a more impact full smite like chilling smite.

I love playing different Champions in the jungle but with the recent changes (I mean season 5 changes not specifically this patch) I've been discouraged from playing a wide variety of Champions in the jungle, the current pool of viable junglers seems quite small since most other champions atm feel as if the can't impact the game early enough because of clear times and in some cases due to cases mana and health lost on just clearing the jungle. My list of viable champions would be Vi, j4, reksai, fiddle, lee sin, & nidalee if I wanted to impact the game from the start and stay relavent. I'm not saying there aren't other champions who can't be played in the jungle, there definitly are BUT in playing anything other then the ones mentioned your putting your self at a disadvantage, and I feel like the changes that have been going on throughout the season have been creating a much larger rift between top tier and 2nd/ lower tier junglers. (Mainy due to the jungle camps becoming harder to do at the start of season 5, price increase on jungle item by 100 gold, and now being unable to exchange jg item for free now) As a jungle main who wants a wider array of good picks in the jungle I would really appreciate if lower tier junglers got small buffs or just something so there isn't such a huge discrepancy of power between them. Just some of my thoughts, I'm not high enough or anything, neither do I play league as much as some people do but I do love the game and I am worried about how balanced my favorite role is.

Sidenote: sorry for misspellings and Grammer errors, English isn't my first language.