What do you think, how did the technical analysis change? What trends are out of date, and what methods do you use so far? What helps you to make an effective market solution now?
You didn't mention any specific time period from what to what.
Trends don't get out of date.

Ranges don't get out of date although you didn't ask about ranges.
Below are my list of changes involving trading...things important to me.
1) The biggest change in the markets in the last 10 years involves
algorithms and their impact (good and bad) on the markets...professional level and retail level.
2) Better technology for retail traders if they can afford it.
3) There are less retail traders.
4) Better social media resources that are free to help with news events (e.g. twitter).
5) Profitable retail traders have more commonality in their business like approach to trading.
6) The markets are more efficient in weeding out traders that trade poorly.
7) Profitable retail traders today are much better at adapting to change market conditions than traders 10 years ago.