Although I'm not 75 yet, I know plenty of weathy over-75s and I can't see why they shouldn't be paying for their TV licence. I can afford to pay for mine, and that isn't going to change when I'm 75. If some pensioners can't afford it, the licence could be free to those on certain benefits, or those with only the State pension.
The same applies, in my opinion, to the Winter Fuel payment, and the ludicrous £10 Pensioners' Christmas Bonus should be scrapped too. (You didn't know about this? It's just paid into your bank, with no notfication.) The comfortably-off don't even notice it, far less trot off to treat themselves to a packet of crackers and a Christmas pudding.
The bus pass is whole nother issue and probably deserves (or has even had) a separate discussion. It's not just a transport subsidy, it gets older people out and about, helps prevent loneliness and isolation, reduces traffic congestion by encouraging us to leave our cars at home and get used to bus travel - and to get rid of our cars entirely when we're no longer safe to drive. If they scrap it, many older people won't get out much, or will persist in driving when they ought to give up.