Tamils already have political representation, Elections were there and also there are some elections on coming months too. They have voted last time government parties as well as opposition parties, it is good move to see they are voting for mainstream political parties. Already GoSL has Tamil parties, some of Tamil parties with them since the beginning! The issue what you have mentioned as "Estate Tamils", Tamils in north says Jaffna Tamils came first before Tamil labors who currently live in the middle of country, so they have some less respect. There are some casts issues too, some Tamils doesn't accept some casts of other Tamils or they not going to their restaurants etc. I have Tamil neighbours around my home, One Tamil neighbor mentioned some casts name and told they are the respectful Tamils than other Tamils. Those things are not matching for 21st century, Anyway huge developments happening around country, Jaffna products are coming to Colombo, lot of local people visit Jaffna, also famous buddhist historical temple also hindu temples. Everything is getting normalize alot of tourism development happening in east.
Past years alot of tourists were from UK/Germany, Anyway last year majority tourists were from India I think! lol