Long Term (2 year) visitor visa advice required

[samfsl1988]

Hi,

Me and my family are looking to apply for a 2 year visitor visa. I have visited UK 4 times on short recreational trips and my family have visited 2 times. My fiance visited with my and my family on our last trip. We have a good travel history including visits to various schengen countries, australia, singapore in the last 5 years(excluding fiance). Will it be advisable to apply for 2 years visa now? Only purpose for this is convenience.

Another query, if we are granted 6 months visitor visa, but do not visit. Does this point become a negative when we apply next time?

Any advice is helpful.