Sqwerties, I'll give you my comments as an owner of an Antares for nine years.
1. We like our raised seats in the back. The seating capacity has not changed, since there are
cushions and backrest for people sitting below. The primary difference is raised seating, vs. 'same level' seating as the rest of
cockpit.
Here is photo of our
cockpit with 13 adults. Notice that everyone is seated at same level...and not using the aft benches. We find guest rarely sit up 'high'...maybe because they are not wanting to look down on their friends.
What we don't like with our current configuration
is solar capacity.
The full
bimini adds more capacity and is a cleaner look than our setup. I also prefer the unobstructed view from the cockpit aft, sans the
stainless steel arch. There are pros and cons to either approach. Overall I personally like the more open feel of the cockpit aft.
With the full hardtop, the boom has been extended 3ft, 1m aft, increasing sail area for the in-mast
furling system. This increases the sail area.
2. We have two
satellite domes on our arch. We rarely use one (KVH), and now, with
Iridium GO (which we have), we really don't need either dome. I wish our domes were gone, as we don't need them. The satellite
antenna for the
Iridium go is mounted on our first spreader. This is a better and easier location for the
antenna.
3. I"m not sure about replacing the aft support with Arch. I've sent your questions to Memo, the owner of the yard, and will post a reply shortly.
The bottom line, there are always tradeoffs. As an owner, I love our
boat, but I also like the newer changes in the GS. For me,
solar is key, and that is why I like the larger top for cleaner installs of solar, and better
water collection for watertanks.