Hi
Sounds like you have a Macrolite (?)
MacPac is a well known and generally well respected tent manufacturer here in Australia, as it is in NZ.
Those shelters are on the heavy side for many that frequent these forums but are mid range for the traditional bushwalker here.
If it is the Macrolite or a silnylon Minaret, keep in mind that you need to seam seal them.
They generally have a good reputation for weather resistance, particularly wind and rain, not so much snow with the Macrolite.
So if you are after long term use and you like the shape/size of it , why not keep it ?
If on the other hand the weight is bothering you and you don't particularly care for it, then you know what to do.
Franco