I share your concerns about Fisher. Him beeing invisible for half of the bounty was annoying but managable. But beeing invisible and having a beck like skill is a bit over the top. Becks gold skill, which is similar to Fishers plat is already annoying, but since Fishers plat will stack to the max most of the time in bounty, he will propably only get half of the damage a normal bounty would take.
Even worse is that most of the Energy damage dealers are HROF heros that will trigger his skills even more often.
I do not share your opinion on Matador. He is good at breaking covers by himself. His Bronze breaks a cover instantly and with one mag he shreds a cover too. If his shield would be troggered by every cover broken, he would be from zero to hero, from useless to op. It is up for test but I can think of some teams he could do good in. With the changes on him and Keel cover breaker teams may be back.