2.) Why are the talks are so old?
Laziness? If it ain't broke, they probably don't want to fix it.
Though I do know what you're saying about adding little creative touches. I haven't seen that lately. Many years ago, my dad used to make illustrations for use in his talks; one was of the Immense Image in Daniel 2 (head of gold, arms of silver, etc.). He also had one of two houses, one built on good foundation, the other on sand. The pictures are still in the house somewhere. But I have not seen a visual in a public talk for some time.
The only thing that comes close was some months ago, the speaker brought a pair of Zildjan cymbals and started crashing away at one point! He was talking about the scripture in 1 Corinthians 13 where Paul talks about becoming a "sounding piece of brass" if you claim to do wonderful things, yet do not have love. I was in the sound booth and it was my first time doing it, so I frantically had to keep cutting off the main mic during each cymbal crash. It caught me totally by suprise. I'm sure the brother got counseled for being "too flashy," and "too loud."
The lack of creativity allowed in talks, plus the simplifying of assemblies (no decorations, no orchestra, no food, etc.) gives the average dub less and less to look forward to...no wonder the apathy is growing.