Bitcoin has proven, that it is works fine, even through times of different attack modes (FUD, spam, patenting, +, XT, RV, CW etc). I don't think we have a pressure to raise the blocksize or to force the mass adaption. We don't need no SegWit to make Bitcoin great again, because it is already. Give this baby time to grow, folks.
Does it work well? You are talking about slow transactions, higher transaction fees, and it will go even higher. What does that mean good? So ridiculous.
The fees will always get to an appropriate level that people are willing to pay. No one is going to shed a tear if you can't pay them. If the fees become unacceptably high for the general BTC userbase, then less transactions will be made and lower fee transactions will then be confirmed. This is how the free market determines an appropriate transaction fee. It is also how the free market shakes out weak players from using bitcoin (who will then be replaced by users who accept the conditions).